After relocating due to family circumstances, Suzuko Homura returns to her hometown, feeling nostalgic for the happy childhood she shared with Chinatsu Morikawa. Those days, forever bound by a promise of friendship, remain a bright memory for Suzuko, yet she has lost touch with Chinatsu during their separation. Eager to start fresh, Suzuko tries to leave the past behind and make new friends at school, but she finds it difficult. Meanwhile, Chinatsu works multiple shifts to support her family while continuing her studies, and the growing pressure to meet high expectations soon becomes overwhelming. Amid their respective situations, both girls begin playing the popular card game WIXOSS and discover that they have been chosen as Selectors—players whose memories are now represented by gold coins and who must battle other Selectors to earn five of them. Guided by their LRIG avatar cards, which are created from the user's memories, the two learn that inconsistently partaking in duels or losing all their coins will result in a grim outcome. Resolved to protect what they hold dear, Suzuko and Chinatsu prepare for the battles ahead and fight for the chance to reclaim themselves.