Su Yu’s mother informs him of the existence of Ren He, Wu Bi’s second uncle, who severed relations with the family following his sister’s death, and he decides to track him down personally. He enters Ren’s heavily guarded home and sees a tied dog, which he pets, not realizing that the owner is watching him. Ren, informs him that the dog never allows anyone to pet it beside him, leading Su Yu to believe that the uncle is nice. He follows him into the house, but he is stopped by the guards. They instruct him to wait outside since Ren is busy. Su Yu gives in to the old man’s whim and patiently waits outside despite the heat, but he is denied exit when he attempts to go out to eat.
The evening arrives, but he is still not allowed in. Thirsty, he decides to drink from the man-made fountain but is forcibly pushed into it by the guard. To pass the time, Su Yu phones Wu Bi, who meets with his former classmates; they are surprised when he answers the phone in a gentle tone and teases him about it. Su Yu seeks shelter beside Mo Ren’s dog as the rain pours down, and his phone cuts out in the middle of a call. The next day, he was again denied entry until the evening. Meanwhile, Wu Bi returns home to find the house vacant; he searches for Su Yu, whose phone is already broken.
Ren, He finally calls Su Yu to speak after the second night of waiting. The old guy informs him that he knows who he is and his mother. He goes on to say that he sympathizes with her for being a victim of years past.
(Warning: This episode contains mentions of suicide and violence)
Back at Ren He’s, the old man says that his sister committed suicide to bear the blame for the company. She made the sacrifice knowing that her husband was dedicated to his company. He admits to spreading rumors about Su Yu’s mother and Wu Bi’s father in the hopes of separating his sister from her husband, but he was unaware that the couple loved and trusted each other so much. Ren, He believes Wu Bi’s father knows the truth. He gives Su Yu the letter his sister left to prove Su Yu’s mother’s innocence and plans to tell his nephew the truth.
Su Yu is confronted by Wu Bi when he gets home, who keeps asking him where he has been. He explains that he knows the truth about their parents from visiting Wu Bi’s uncle, and he’s the inspiration for the statue due to the good relationship between their mothers. He hands Wu Bi the note his mother left him, but the latter is still controlled by his worry-induced rage. Su Yu wonders if his pain is worthwhile. Wu Bi returns home and sobs in his mother’s room before apologizing to Su Yu’s mother for all he said. He discovers that Su Yu is in the hospital and what happened at his Uncle’s place. He realizes Su Yu went through so much for him and goes to Ren He’s house to beat them for making Su Yu suffer. He sees the guard who kicked Su Yu and violently smashes his face in the fountain.
When Wu Bi arrives to join them in celebrating Su Yu’s birthday, the celebrant ignores him. Later, he approaches Su Yu and apologizes. He emotionally asks Su Yu why he had to meddle and see his uncle only to find out the truth. He claims he’d rather not find out if it will cost his stepbrother. Su Yu ends up apologizing to the tearful Wu Bi, who eventually gives him the statue, a birthday gift six years later that has finally reached its owner. They go to Wu Bi’s house for his birthday, where he is given a car. When they return home, they discover a surprise birthday celebration for Wu Bi with Duo Duo, Aunt Zhou, Lao Si, and even Bo Kuang’s family. Wu Bi’s father observes from the outside and realizes that his son truly enjoys being with Su Yu’s family.
During their vacation, Su Yu and Wu Bi begin working at Aunt Zhou’s restaurant and are surprised by Wu Bi’s father. Wu Bi serves his father, who compliments the dish and then leaves. Wu Bi’s father begins to invite his coworkers into the restaurant, who all compliment Wu Bi for working part-time.
At home, Duo Duo unintentionally discovers a secret compartment in the statue where Su Yu and Wu Bi see a paper proving Wu Bi’s father was duped six years ago by his supplier in collusion with his rival company. They rush to tell Wu’s father about the evidence. They watch CCTV from the day Wu Bi’s mother died and see that her car traveled through the crossing twice. They believe something happened between those times.
In a flashback, Ren receives a letter from his sister, who is going to commit suicide. Meanwhile, Wu Bi’s mother, who is set to carry out her plan, receives word that proof will be provided in exchange for money. She complies with it knowing that she no longer needs to sacrifice herself. When she discovers she is being pursued, she places the evidence into the compartment of the statue and attempts to flee her pursuers, who manage to crash into her car, killing her.
The father and son pay a visit to her grave, where Wu Bi’s father informs him that the criminals are now being investigated by the police. He apologizes to her for not being able to properly care for his son. Wu Bi pats his father as he bows. Su Yu’s mother is visited by her husband in the new house she purchased for their sons, and he invites her to a meal. Wu Bi’s father begins to assist Aunt Zhou’s restaurant by bringing in clients.
Meanwhile, Aunt Zhou and Duo Duo must pay a visit to the former’s ailing grandmother.
There is a lot to digest in ‘Stay With Me’ Episodes 17–20, especially with the revelation of Wu Bi’s mother’s death. Wu Bi’s father’s actual feelings have also come to light, which has begun to heal the relationship between the two. Although it appears that the rough edges of their lives have begun to smooth, we know there’s still so much in store for the upcoming finale episodes dropping next week, so stay tuned!
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Promises Are Made in ‘Stay With Me’ EPs 13-16