Welcome to this game that combines visual novel and side-scrolling bullet hell shooter elements. During the day, you will experience the protagonist's school life from her perspective. At night, you will become a secret operative, piloting the Dreambreaker through various dreamscapes. To find her missing sister, the protagonist, Mu Deng, dives into different dreams every night, searching for the clues her sister left behind. Along the way, she encounters various companions and gradually uncovers the secrets behind her sister's disappearance.