Full of ups and downs, the start of the next chapter in the bright, violent, and fun magical girls' story!
One night, Illya becomes a magical girl after Magical Ruby barges into her bathroom and tricks her with clever and skilled talk. Rin, Ruby's original owner, tells her to collect ＂Class Cards＂.
Together with her rival(?) Miyu, another magical girl, they get hurt, bump heads, and fight through hard battles, to eventually somehow manage to collect the 7 Class Cards. Illya and the others are able to return to their peaceful daily lives.
A few weeks after the collection mission is over, Illya and Miyu are ordered by Rin and the others to take on a new mission. It was supposed to be a simple task of forcing magical energy into the earth to stabilize it, but something went wrong and trouble ensues!