Hono Mizu was once a thriving port town that was consumed by an undersea volcano that buried the city leagues below an impossibly harsh environment. A combination of fire and water: The Boiling Sea.”
Ray to Kai and Nya in "Out of the Fire and Into the Boiling Sea"

The Boiling Sea is a dangerous body of water located somewhere that is presumably in the Endless Sea. It is a series of undersea volcanos that engulfed the once thriving port town of Hono Mizu. The town is currently located in the largest volcano. Inside the town is an ancient library, which Ray and Maya used as a shelter to hide away the Reversal Time Blade under the orders of Wu after he discovered the weapon in the woods near the Monastery of Spinjitzu.


Following the defeat of Krux and Acronix after their powers of Time where absorbed by the Time Blades, the Time Blades were used by Wu and Garmadon to open a Temporal Vortex, which they used to dispose of the blades, but Krux and Acronix soon followed them, becoming lost in time. However, Krux would somehow immediately escape, landing in the woods below the monastery and fleeing, unaware of the Reversal Time Blade, which landed directly after he fled.

Shortly after this, Wu discovers the Time Blade in the woods. Knowing it was too powerful to keep, he ordered Ray and Maya to dispose of it within the Boiling Sea, knowing that only the current Elemental Masters of Fire and Water working together could reach the blade through a series of trials.

Pause and Effect

After Kai and Nya reunite with their parents, they explain to their children on what Krux and Acronix's master plan is; to create a time-traveling mech known as the Iron Doom, which would allow them and their Vermillion warriors to travel to any point in Time they please. After Nya realizes that the pause they felt earlier was the arrival of the third Time Blade, Kai realizes that if Krux and Acronix found the last one, their mech would be fully operational. However, Ray and Maya explain that Wu found it shorty after Krux and Acronix's defeat, where they were ordered by him to dispose of it within the Boiling Sea.

Maya then realizes that because their children are the current masters of Fire and Water, they could be used by the Hands of Time to retrieve the blade. Just before they could leave, they are confronted by Krux and Acronix, where they explain that Kai and Nya will recover the last blade for them, otherwise the dying Master Wu will perish.

Out of the Fire and Into the Boiling Sea

Kai, Nya, Ray and Maya, along with Krux, Acronix, Machia and a dying Master Wu, use Machia's airship to reach the Boiling Sea. After Ray and Maya explain the history and what awaits them within the Boiling Sea, they use the Dragon Blade to create the Fusion Dragon, where they use it to traverse the Boiling Sea to reach the city of Hono Mizu.

After a series of trials and a fight with several Geoatomic Rock Monsters, Kai and Nya are able to recover the Reversal Time Blade from within the library. As the who place begins to fall apart, they summon the Fusion Dragon to return to Machia's airship. However, Krux and Acronix reveal they had no intentions of letting them use it to save Wu, enabling a battle. In the end, Acronix strikes Ray with the Forward Time Blade and then pauses the group with the Pause Time Blade. As Krux claims the fourth blade, Acronix orders Machia to dispose of the group at the Boiling Sea. As the airship leaves without them, the effects of the Pause Time Blade wears off, causing everyone to plummet down towards the sea. Kai and Nya then summon the Fusion Dragon again and pick up the others before following Machia's airship back to the Vermillion Swamps.

Lost in Time

Knowing that time was short and that Wu was soon to die, Nya got an idea and bailed from the Water-Fire Dragon, where she ran down to the woods and obtained the past Reversal Time Blade, knowing that since they were in the past, it hasn't been put in the Boiling Sea yet. With the blade, she was able to restore Wu back to normal. Following this, Nya and Wu explain to the distraught Kai about the recent turn of events with the discovery of the past Reversal Time Blade.

In order to recreate an established continuity, Wu threw the past Reversal Time Blade to his younger self, who was ordered by young Garmadon to dispose of it within the Boiling Sea.

The Reversal Time Blade would later be brought back to the Boiling Sea for safekeeping by the Ninja after Krux, Acronix, and Master Wu were all lost in time.[1]


LEGO Ninjago: Masters of Spinjitzu

Season 7: The Hands of Time



Landmarks, Vehicles, and more


Abandoned Village · Anacondrai Tomb · Ancient Pyramid · Birchwood Forest · Blackwood Forest · Billy Badlands · Boiling Sea · Bottomless Pit · Caves of Despair · Chen's Camp · Chen's Island · Chen's Monastery · Chrono Crater (non-canon) · Constrictai Tomb · Corridor of Elders · Crashcourse Canyon · Dark Island · Desert Pyramid · Digger's Deep · Digiverse · Dream World (non-canon) · Echo Canyons · Endless Sea · Fangpyre Tomb · Fire Temple · Floating Ruins · Forest of Tranquility · Frozen Ice Pond · Frozen Wasteland · Glacier Barrens · Glacier Island (non-canon) · Golden Peaks · Haunted Hill · Hiroshi's Labyrinth · Hollow's Bluff · Hypnobrai Tomb · Ice Fortress · Ice Labyrinth · Ignacia · Jamanakai Village · Jankikai Jungle · Kingdom of Shintaro · Mala Wujira · Mega Monster Amusement Park · Metalonia · Mount of Eternal Shadows · Mountain of a Million Steps · Mountain of Madness · Mountains of Impossible Height · Ninjago City · Ninjago Harbor · Ninjago · Ninjago (LEGO Universe) (non-canon) · Ninjago Sky · Nom (non-canon) · No Man's Bluff · Oni Land · Ouroboros · Prime Empire · Primeval's Eye · River of Darkness · Samurai X Cave · Sea of Sand · Shadow Bay · Shintaro Mountain · Spinjago (non-canon) · Spirit Coves · Stiix · Stone Army Tomb · Tiger Widow Island · Tomb of the First Spinjitzu Master · Torchfire Mountain · Toxic Bogs · Venomari Tomb · Vermillion Swamps · Wailing Alps · Wildwood Forest


Biker Tavern · Borg Store · Borg Tower · Buddy's Pizza · Chen's Palace · Concert Hall · Dareth's Apartment · Domu · Dragon's Forge · Ed & Edna's Scrap N Junk · Explorers Club · Four Weapons Blacksmith · Fur Mart · Gamer's Market · Garmadon's Dark Fortress · Grand Sensei Dareth's Mojo Dojo · Hanging Temple · Hidden Workshop · Hiroshi Labyrinth Stronghold · Hono Mizu · Kiddie Arcade · Kryptarium Prison · Laughy's · Lloyd's Treehouse Fortress · Marty Oppenheimer School of Performing Arts · Monastery of Spinjitzu · Ninjago City Aquarium · Ninjago Doomsday Comix · Ninjago Museum of History · Oni Temple · Royal Palace · The Serpentine's Underground Fortress · Steep Wisdom · Temple of Airjitzu · Temple of Fortitude · Temple of Light · Temple of Madness · Temple of Resurrection · Vermillion Dome of Doom · Wind Farms Power Station · Wong's Costume · Wu's Academy · Yang Tavern


Battle Wagon · Blade-Copter · Blade Cycle · Chain Cycle · Chenosaurus · Chen's Blimp · Chen's Ferry · Cliff Gordon's Yacht · Clouse's Earth Mech · Cole's Earth Mech · Condrai Buggy · Condrai Crusher · Cyber Dragon · D.B. Express · Desert Lightning · Destiny's Bounty (2.0 · Black Bounty · Destiny's Shadow) · Destructoid · Dieselnaut · Earth Driller · ElectroMech · Empire Dragon · Fangpyre Robot · Fangpyre Wrecking Ball · Fire Mech · Fire Stone Mech · Firstbourne Mech · Garmatron · Ghost Cycle · Ghost Taker GT · Golden Master's Mech · Golden Mech · Hopper · Hover-Copter · Iron Doom · Jalopy · Jay's Velocity Racer · Jungle Raider · Kai Fighter · Kai's Bike · Katana V11 · Katana 4x4 · Lightning Offroader · Lloyd's Velocity Racer · Lunar Rover · Mech-enstein · Mech Jet · Misfortune's Keep · Nindroid MechDragon · Ninja Nightcrawler · Nya's Bike · Oni Bike · Proto Sam-X · Prototype X-1 · Raid Zeppelin · Rattlecopter · R.E.X. · Rock Cycle · Rock Roader · Ronin's Mech (non-canon) · Roto Jet · Salvage M.E.C. · Samurai Mech · Samurai Mech 2.0 · Samurai Mech (Stone Army) · Samurai VXL · Security Mech · Serpentine Bus · Serpentine Train · Snowmobile · Skulkin Mech · Sky Shark · Storm Fighter · Titanium Ninja Tumbler · Tread Assault · Ultra Sonic Raider · Ultra Stealth Raider · Vermillion Invader · Vermillion Racer · Vermillion Ship · Warrior Bike · Wu's Rickshaw · Wu's Ship · Zane's Bike · Zane's Titan Mech

Other Realms

Chima · Cloud Kingdom · Cursed Realm · Departed Realm · Djinjago · Never-Realm · Realm of Madness · Realm of Oni and Dragons · Underworld

The LEGO Ninjago Movie Locations

Ninjago City · Ninjago · Bridge of Fallen Mentors · Canyon of General Unhappiness · Firing Room · Garmadon's Volcano Lair · Jungle of Lost Souls · Koko's Apartment · Lost Generals' Lair · Ninja Mech Garage · Ninjago Beach · Ninjago High School · Ninjago Tower · Temple of Fragile Foundations

The LEGO Ninjago Movie Vehicles

Destiny's Bounty · Fire Mech · Ice Tank · Lightning Jet · Quake Mech · Water Strider · Green Ninja Mech Dragon · Garma Mecha Man · Ninja Helicopter · Shark Mech · Piranha Mech · Manta Ray Bomber · Flying Jelly Sub

In-Universe Books

Boobytraps and How to Survive Them · Book of Spells · Cliff Gordon's Guide to Wooing Women · Desert of Doom · First Spinjitzu Master's Book · Ninjanuity · Ninjelligence · Serpentine Book · Wu's Lesson Book

In-Universe Video Games

Conic the Ratboy · Counter · Dancy Pants · Fist to Face · Lava Zombies · Lightning Larrikin (non-canon) · Pinball Racer (non-canon) · Prime Empire · Sitar Legend · Turbo Street Brawler


Amulet of Protection · Bell of Divinity · Blade Cup · Blind Man's Eye · BorgPad · Borg Industries · BorgWatch · Celestial Clock · Chest Vortex · Cliff Gordon's Replica · Cole's Guzzler · Credits · Cyrus Borg's Statue · Darnagom Enterprises · Dapper Dan · Dragon Armor (Blade · Chestplate · Helmet · Shield) · Hall of Villainy · Health Boards · Helmet of Shadows · Illuma-Swords · Infovision · Jadeblade Statue · Lantern · Manifestation Gate · Map of Dens · Map of the Golden Weapons · Medallion · Minidroid Chess · Mirror of Fears · Obsidian Glaive · Oni Masks (Deception · Hatred · Vengeance) · Perfect Match Console · Police Commissioner's Model Boat · Ramne Noodle Cart · Realm Crystal · Route 23 · Scroll of Airjitzu · Shrinking Pill · Starfarer · Teapot of Tyrahn · Temporal Vortex · Thermal Kinetic Inverter · Traveler's Tree · Ultra Hunt · Underworld Helmet · Vast Industries

Metaphysical Concepts

The Balance · Death · Souls

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