The evil alien known as Zarion who is pure evil to invade and taking over the Scratch World. After the crisis of Zarion, Reimu who returns home after collecting as many resources for Vise but only to discovered there was the crisis on Scratch World so she then investigating the crisis on Scratch World and the alien invasion. Meanwhile, the leader of Zarion known as Omega Virus who is pure evil and invaded the Scratch World. Reimu and her group must stop the evil Omega Virus and Zarion army and restore the peace on Scratch World. Meanwhile, she met a Yo-Kai known as Damona who was the first one who saw the crisis. She even found out that Shadow Light and Omega Virus were in an argument on who's better. Light, who was going to defend Reimu from Omega Virus got sick and he didn't even remember how.