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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.”

The Boiling Sea is a dangerous body of water located somewhere that is in the Endless Sea. It is a series of undersea volcanoes 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 Elemental of Time where absorbed by the Time Blades, 4 gauntlet-like "blades" made of Chronosteel 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 Geotomic 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 Fusion 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.

After The Hands of Time

Upon Lloyd's request, Kai and Nya returned the Reversal Time Blade to the Boiling Sea for safekeeping.[1]


Ninjago: Masters of Spinjitzu

Season 7: The Hands of Time



In Ninjago: Masters of Spinjitzu

Concept art




Kingdoms, cities and villages: Abandoned village · Coastal village · Farmers' village · Hono Mizu · Ignacia · Jamanakai Village · Keepers' Village · Kingdom of Shintaro · Merlopia · Metalonia · Ninjago City · Nom · Oni land · Ouroboros · Serpentine village · Spinjago (non-canon) · Stiix · Valley of the Sphinx · Village in the valley · Village of Haru · Village of the Formlings
Jungles and forests: Birchwood Forest · Blackwood Forest · Forest of Tranquility · Glimwillow Woods · Hiroshi's Labyrinth · Jankikai Jungle · Primeval's Eye · Toxic Bogs · Uncharted jungle · Vermillion Swamps · Wildwood Forest
Mountains, caves and canyons: Caves of Despair · Corridor of Elders · Crashcourse Canyon · Crystal Caves · Dungeons of Shintaro · Echo Canyons · Firstbourne's nest · Floating Ruins · Geckle Strong-Cave · Golden Peaks · Hollow's Bluff · Ice Cave · Haunted Hill · Mala-Wojira · Mines of Shintaro · Mino Pit · Mount of Eternal Shadows · Mountain of a Million Steps · Mountain of Madness · Mountains of Impossible Height · Munce Home-Cave · No Man's Bluff · Rock-Bottom · Samurai X Cave · Shintaro Mountain · Story cave · Tallest mountain of Ninjago · The Teeth · Torchfire Mountain · Wailing Alps
Tombs and graveyards: Anacondrai Tomb · Cemetery of Souls · Constrictai Tomb · Fangpyre Tomb · Graveyard of ships · Hypnobrai Tomb · Lost Tomb of Impending Peril · Tomb of the First Spinjitzu Master · Tomb of the Stone Army · Venomari Tomb
Water areas: Black River · Boiling Sea · Endless Sea · Frozen pond · Hollow's Trench · Lightning Lagoon · Northern Ocean · River of Darkness · Shadow Bay · Spirit Coves · Tartarus Trench
Islands: Ninjago · Chen's Island · Dark Island · Dyer Island · Glacial Glacier · Glacier Island (non-canon) · Island of the Keepers · Lighthouse Island · Squawk Island · Tiger Widow Island
Deserts: Desert of Doom · Sea of Sand
Other: Arctic (non-canon) · Blind Man's Eye · Billy Badlands · Bottomless pit · Chen's camp · Chrono Crater (non-canon) · Dead's End · Dead Man's Squall · Delta V · Digger's Deep · Digiverse · Dream World (non-canon) · End line · Frozen Wasteland · Glacier Barrens · Ice labyrinth · Manifestation Gate · Mega Monster Amusement Park · Ninjago (LEGO Universe) (non-canon) · Ninjago wharfs · Ninjago Zoo · Outer space · The Pit · The Pit (Shintaro) · Rift of Return · Route 23 · Storm belt · Strangler's Path · Temporal vortex

Buildings and establishments

Temples, palaces, fortresses and monasteries: Anacondrai Temple · Castle of Ice · Chen's monastery · Chen's Palace · Crystal Temple · Fire Temple · Garmadon's Dark Fortress · Garmadon's monastery · Hanging Temple · Ice Temple · Lloyd's treehouse fortress · Merlopian Palace · Monastery of Spinjitzu · Mountain monastery · Ninja Dojo Temple · Oni Temple · Palace (Shintaro) · Pyramid (Desert of Doom) · Pyramid of the Sphinx · Royal Palace · Skull Keep · Serpentine Pyramid · Serpentine's underground fortress · Temple of Airjitzu · Temple of Felis · Temple of Fortitude · Temple of Light · Temple of Madness · Temple of Resurrection · Temple of Wojira
Stores and establishments: Benny's Arcade Emporium · Biker Tavern · Borg Industries · Borg Store · Buddy's Pizza · Chan's Theater · Concert Hall · Dairy Dragon · Dareth's TV studio · Darnagom Enterprises · Ed & Edna's Scrap N Junk · Explorer's Club · Four Weapons Blacksmith · Fur Mart · Garbage depot · Gas station · Geckle courthouse · Grand Sensei Dareth's Mojo Dojo · Kai's dojo · Kiddie Arcade · Kryptarium Prison (Cell one) · Laughy's · Library of Domu · Marty Oppenheimer School of Performing Arts · Mystake's Tea Shop · Ninjago City Aquarium · Ninjago City Bank · Ninjago City Hall · Ninjago City Hospital · Ninjago City Police Station · Ninjago City Prison · Ninjago Doomsday Comix · Ninjago Harbor · Ninjago Metro · Ninjago Museum of History · Ninjago Park · Noodle factory · Repo yard · Ronin's pawn shop · Serpentine library · Steep Wisdom · Steeper Wisdom (non-canon) · Storm Farms · Twitchy Tim's gas station · Vast Industries · Dance class · Wong's Costume · Wu's Academy · Yang Tavern
Houses and apartments: Cliff Gordon's estate · Dareth's apartment · First Spinjitzu Master's house · Hero's Suite · Sally's farm · The Mechanic's headquarters · Vermillion Dome of Doom
Other: Borg Tower (Borg Tower vaults) · Chen's Coliseum · Chen's Royal Arena · Dragon's Forge · Hall of Villainy · Hidden workshop · Hiroshi's Labyrinth Stronghold · Munce arena · Old electronics warehouse · Oni stronghold · Palace gardens · Pythor's base · S.O.G. Headquarters · Sewers · The Mechanic's warehouse · Tower of Tears (non-canon)

Prime Empire

Battle arena · Disco · Fire wall · Forest of Discontent · Marketplace · Glitch · Infinity maze · Okino's house · Place of swords · Scott's garage · Shifty's table · Side-scrolling platforms · Sushimi's sushi restaurant · Terra Karana · Terra Technica · Terra Domina


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


Ethereal Divide · Grasslands

The LEGO Ninjago Movie locations

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