 Jason, the previous hero of the Blaster Master series has passed away. Now, Jason s son, Roddy takes over the mission to eliminate the infested monsters in the underground with the battle vehicle, Sophia. With the help of his sister Elfie, he will gain support at certain points. During the mission, Roddy will also have to exit the Sophia to enter small rooms filled with danger. Will Roddy be able to save the world from the infested monsters?