As part of the Arks Special Planetary Exploration Group Alter, the player is on a journey to return alive from Machia, a chaotic planet where photons have no effect, after the Delta Variant warship crashes on Machia with 1,000 crew on board. The planet also happens to be home to the Gigantes, which huge foes that the player must face throughout the game.

As part of the Arks Special Planetary Exploration Group Alter, the player is on a journey to return alive from Machia, a chaotic planet where photons have no effect, after the Delta Variant warship crashes on Machia with 1,000 crew on board. The planet also happens to be home to the Gigantes, which huge foes that the player must face throughout the game.