In the future (subsequent to the events of the television series) Kate, Rose, Rachel and Claire divide their immortal lives between study and vigilantism. Their past link to the red garden on Roosevelt Island comes back to haunt them after mysterious transfer students Louise and Edgar seek out their friendship.

Takeshi was just an ordinary guy until a perfectly innocent study session with Michi - the most beautiful girl in the school - ended up with him being mysteriously transported into the strange dimension known as the Weiss Schwarz Battle Space. Once there, a crazy but enthusiastic old man informs him that he is the chosen warrior and must win a succession of card battles to get back home. The only problem: he doesn't know how to play! However, with the expert Michi ready to teach him the ins and outs of this bizarre and improbably slapstick card game, Takeshi will learn the ropes and get ready for the card battle of a lifetime. Assuming he survives the training... (Source: ANN)

Energetic and thrill-seeking sixth grader Toppa Bashin has his mind set on only one thing—the card game Battle Spirits. Bearing a ruby pendant inherited from his missing father, Bashin heads to school every day with excitement: not for academics, but for card battling, much to the chagrin of his peers. One day, Bashin encounters J, the child prodigy champion of Battle Spirits, who bears a similar pendant. Star-struck, Bashin challenges J to a battle. However, the battle he gets is one he did not anticipate; the two are teleported to a mysterious arena in the sky—the Isekai World—where Spirits from the game become real. Feeling that his dream is finally within arm's reach, Bashin dives headfirst into the Isekai World, encountering other card battlers with extraordinary pendants. While making his way to the top, he slowly realizes that there is more to Battle Spirits than he ever imagined.

Yurume, an 18-year-old ronin and recent high school graduate, has high hopes of being accepted and attending Tokyo University. She moves into an apartment complex, the Maison du Wish, located on the outskirts of Tokyo where other ronins living there are studying for upcoming college acceptance exams.