After going out for late-night drinks, Yan Yuechu and his colleague Hu Zhi find refuge from the rain in a rather unusual place: the building harboring Xu Aiyou's escape game, XY. Despite the game's infamy and its mysterious owner, the duo decides to give it a try. With one hour to solve riddles and find their way out of a maze of eerie rooms, Yan Yuechu and Hu Zhi manage to clear the game in time. However, glimpses of what appears to be Xu Aiyou's troubled past scattered throughout the game leave a deep impression on the men—an impression so lasting that vivid scenes from new escape games creep into their dreams. The following day, Yan Yuechu receives a letter advising him to stay away from escape games. Although he does not receive conclusive answers from Xu Aiyou, he dreams once more that he must solve a puzzle to escape from his own bedroom. But was it truly a dream? Unsure where reality ends and illusions begin, Yan Yuechu will have to uncover the truth behind XY if he wishes to preserve his sanity.

Raki Kiseki is a second-year middle school student who transfers to Star Harmony Academy to become an idol. However, when she uses an Aikatsu Pass she received from her big sister (an Aikatsu engineer), something mysterious happens. Lots of doors appeared before her, and when she opens them, she meets Aikatsu idols she never knew before, such as Yume Nijino (Aikatsu Stars!). Raki vows to design her own premium dress and perform in it on stage. (Source: Anime News Network)

Takuya Enoki is living a difficult life for a fifth grader. His mother passed away in a tragic car accident a few months ago, forcing him to pick up the slack and take care of his baby brother, Minoru, as his father works the endless hours typical of a Japanese salaryman. He will have to sacrifice his childhood in order to meet the needs of his little brother. Cooking, cleaning, worrying, and trying to discipline Minoru are some of the tasks Takuya will have on his plate, all while their neighbors blame him for Minoru’s constant crying. Meanwhile, he will watch as his friends live their carefree lives, enjoying their free time. It will not be easy and there will be plenty of stumbling blocks, but along the way, he may actually learn the true meaning of family.

Everybody goes on vacation to Ayanokouji's private island for fun in the sun. Hilarity ensues.