From an ordinary guy to a chosen warrior, Takeshi's life took a drastic turn after a study session with Michi. The stunning girl inadvertently transported him to the Weiss Schwarz Battle Space, a mysterious dimension. There, an eccentric old man informed him that winning a series of card battles was his only way back home. The catch? Takeshi knew nothing about the game. Luckily, Michi was an expert and eager to teach him the ropes of the comical card game. It was Takeshi's chance to prepare for the biggest card battle of his life, as long as he survived the rigorous training.