
S01E01 New Start
Bai Han Qi, Bai Luo Yin's father, accidentally throws Luo Yin's underwear on the drain. Luo Yin then informs his friend, Yang Meng, that his mother (Jiang Yuan) is re-marrying. Meanwhile, Gu Hai is conflicted...
At Luo Yin's house, Gu Hai presents gifts for Luo Yin's family. At school, Luo Yin learns that in an upcoming medical examination, which includes genital observation, they will have to undress. Worries that Gu Hai will see him naked, Luo Yin asks the vice-monitor not to put them in the same group. However, during the medical exam, he ends up being examined at the same time as Gu Hai.
Two high school students become entangled in a wildly conflicting emotional relationship that erupts when they discover they are now step-brothers.