The series follows 16-year-old Schwann Momo, a girl who loves aliens, space, and the sea. Living with her mother, stepfather, and stepbrother Yoo Chen, Momo struggles with being late for school and facing bullies who mock her intellectual interests. Despite a difficult morning that includes being splashed with coffee and having her belongings thrown on the floor, Momo tries to navigate her school day. When school heartthrob Yi Hai Lan accidentally bumps into her and scolds her, Momo is left feeling even more isolated and misunderstood.