Xia Xiaoman is a sophomore college student. However, one day when he woke up from sleeping in the dormitory, he found that he was reborn as a child, and he also had a portable space. Xiaoman felt confused and excited about this. She was confused because she was afraid it was just a dream, but she was excited because she was reborn and could change her body. Since then, Xiaoman has started his own journey of rebirth.