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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 on deciding to whether or not attend his dad's re-marriage ceremony and approaches his girlfriend, Jin Lu Lu, for advice.

You Qi receives a gift from his admirer, but mistook the gift was from Luo Yin. After school, Gu Hai secretly follows Luo Yin home. Han Qi accidentally washes one of the remaining 2 pairs of Luo Yin's underwear.

Gu Hai beats his physical teachers by doing more than a hundred pull-ups. Luo Yin plans his revenge against Gu Hai by sewing his school jacket shut, resulting being sent out by his math teacher for creating a ruckus.

Gu Hai gets two sleeping pills from the school's doctor and puts them into Luo Yin's water bottle. Unfortunately, the cold medicine Luo Yin took in the morning is expired and that combines with the sleeping pills knocks him out unconscious in class. The next day, some jealous brat from another class , Wu Fang, barges in the classroom and starts insulting Luo Yin's mom, calling her a prostitute. Enraged, Gu Hai knocks Wu Fang down and starts beating him up.

Gu Hai sends Bai Luo Yin home after he gets drunk from drinking too much. When Gu Hai returns home, he sees his dad and refuses his request to move back home with his stepbrother and stepmom. His dad gets furious and beats him. Later, Bai Luo Yin invites Gu Hai to go fishing.

At the school, Gu Hai's girlfriend, Jin Lu Lu, is there, demanding to see Gu Hai. After school, Gu Hai invites Luo Yin to meet Lu Lu and three of them have lunch together. Lu Lu is jealous of the attention Luo Yin is getting from Gu Hai, but she gradually grows to like Luo Yin as he always deflects that attention back to her.

Gu Hai's dad goes to see Bai Luo Yin in hopes that he will accept the favorable terms he offers him. At the same time, Bai Luo Yin's mom, Jiang Yuan, goes to see Gu Hai to talk to him about moving in with the family. Unbeknownst about their family situation, Gu Hai who has moved in with Bai Luo Yin, sleeps on the same bed and goes to school together every day.

While playing basketball, Bai Luo Yin injures his leg and face by a fellow student, whom gets kicked by Gu Hai for injuring Luo Yin. Later, Gu Hai helps Luo Yin with his wounds. At night, Gu Hai tries to break the same-sex barrier with Luo Yin in the bed, which Luo Yin rejects. Gu Hai and Luo Yin visit Gu Hai's friends, Li Shuo and Zhou Si Hu, where he learns from them that Gu Hai does not like people touching him.

When Bai Luo Yin helps Gu Hai move, he meets Gu Hai's girlfriend, Jin Lu Lu. She goes into a fit of rage because of Gu Hai's response toward her attitude. The three of them have dinner together, but another argument happens when Gu Hai stands on Bai Luo Yin's side. Later, Bai Luo Yin's dad get a job promotion, and he suspects it was Gu Hai's doing.

Gu Hai helps Luo Yin's dad in getting a new job but Luo Yin is angry at him for doing so. Gu Hai breaks up with Jin Lu Lu after finding out that she is having an affair. When Ms. Zou's new shop opens, Luo Yin's mom is there and coincidentally, Gu Hai meets her . At last, Luo Yin and Gu Hai find out about their relationship. Out of rage, Luo Yin asks Gu Hai to move out.

Gu Hai skips school and drowns himself in alcohol from missing Bai Luo Yin. Meanwhile, Bai Luo Yin tells his dad the truth about their parents' relationship. Unfazed about the situation, he tells Bai Luo Yin to bring Gu Hai home. However, on his way to find Gu Hai, Bai Luo Yin gets abducted.

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.

Yang Meng shares his trouble with Bai Luo Yin, resulting in him spending more time together with Bai Luo Yin and finding that he lives together with Gu Hai. Gu Hai gets jealous and throws a tantrum with Bai Luo Yin. On the other hand, Bai Luo Yin persuades his dad to marry Ms. Zou.

Luo Yin's dad remarries and Luo Yin is drunk from the wedding. Luo Yin cries and tells Gu Hai that he feels abandoned by his dad. Next day, Gu Hai brings Luo Yin to meet his cousin brother, Gu Yang. Gu Yang does not agree with Gu Hai and Luo Yin's relationship. Without prior notice, Luo Yin's mom is at Gu Hai's apartment. She tries to tell Luo Yin to study abroad but Luo Yin refuses.

Bai Luo Yin receives a call from his ex-girlfriend, Shi Hui, on Christmas Eve. The next day, Gu Hai finds Bai Luo Yin reminiscing the memories of them and gets jealous. Later, Bai Luo Yin is caught off-guard when she appears at his school.