In the near future, the earth's environment is gradually deteriorating. Mysterious alien colonists send huge, cruel, swift, and poisonous monsters to the earth through the wormhole "gap" at the bottom of the ocean, and implement their colonial destruction plan in an orderly manner. To this end, humans jointly create the "Jaguars Project" to create mecha warriors of the same size as the monsters to fight, but as the monsters gradually evolve, the mecha warriors are completely defeated. Politicians from various countries try to build a defensive "wall of life" to stop the invaders, but they soon encounter setbacks. At this critical juncture, General Stek Pentecost (Idris Elba), who is still secretly promoting the "Jaguars Project", retrieves the "Dangerous Wanderer" driver (Charlie Hunnam) who suffered a major blow five years ago, and selects a new partner for him through strict selection, Asako Mori (Rinko Kikuchi). The resurrected "Wanderer" is about to fight against the more powerful monster invaders with the other three remaining mecha warriors, while looking for a good opportunity to completely wipe out the enemy. On the vast ocean, the battle to defend mankind has begun one after another...