The story of Blaster Master Zero 2 begins a few months after the events of the first game (released on March 9, 2017), where the main protagonist Jason saves planet Earth from the mutants. Eve has been infected by mutant cells that are slowly corrupting her body, so together with Jason and Fred, they board G-SOPHIA and begin an intergalactic journey to Eve's home planet, Sophia, in hopes of finding a cure for the mutant infection. (Nintendo.com)