Love Contractually

Xiao Bo works as a courier on a modified classic motorcycle, delivering packages around the city. He is driven by the goal of funding his nephew's ear implant surgery. This motive sets him on a path that will intersect with Ye Jin's world of ambition and opportunity.

Ye Jin is a CEO who falls out of love after her fiancé's affair. The betrayal makes her hate the color yellow, and she forces her employees to remove yellow items from the office. This personal turmoil shapes her later decisions and attitudes.

She reveals to her assistants that she wants a baby via IVF with a surrogate sperm donor while staying unmarried. She asks her assistant to quietly handle the donor search. This secret plan sets things in motion behind Ye Jin's public life.

An assistant creates a sham job interview process, where donors think they are applying to beYe Jin's personal assistant. Among the hopefuls is Xiao Bo, who sees the advertisement and becomes curious because of his need for money. The deception pulls Xiao Bo into Ye Jin's orbit.

A dismissed former employee tries to stab Ye Jin in retaliation for being fired for falsifying information. Xiao Bo intervenes and saves her, proving his bravery and drawing Ye Jin's attention. This event marks a turning point in their relationship.

After the incident, Xiao Bo tells Ye Jin that he wants to work as her assistant to earn money and stability. Ye Jin interviews him and sees potential beyond his initial disorganization. She hires him, starting a fragile working relationship.

Xiao Bo is often disorganized and late, which irritates Ye Jin. She threatens to fire him if his performance doesn't improve. The friction reveals a chemistry that neither of them can ignore entirely.

En route to a meeting with a big client, Xiao Bo is stuck in traffic twice. He borrows his motorcycle from a friend, and Ye Jin rides with him to the meeting. The client, who loves classical motorbikes, is impressed by her willingness to ride a bike, and they seal a business partnership.

Xiao Bo takes Ye Jin to a care center for her Alzheimer's-stricken father, criticizing how she treats him. The confrontation leads to Ye Jin's anger and Xiao Bo quitting his job. Ye Jin's resolve to manage the sperm-donation contract grows more fragile.

The two share a heartfelt conversation where Ye Jin questions her hostility toward her father and Xiao Bo explains his money-need to help his nephew. They drink wine and end up sleeping side by side, marking a fragile emotional closeness. The night softens the tension between them.

They travel to Paris for the IVF process, and the attempt culminates in success with Ye Jin's pregnancy. The moment also shows Xiao Bo's lingering thoughts of Ye Jin and their unborn baby. Ye Jin's friend notices the growing bond between them, though Ye Jin resolves to carry the baby herself.

Xiao Bo creates a storybook celebrating the imagined love between him and Ye Jin and ships it to Paris where Ye Jin stays during the pregnancy. Unbeknownst to him, Ye Jin experiences a miscarriage and slides into depression as a result. The package from home intensifies her emotional collapse.

Sophie's husband and friends worry when Ye Jin disappears from her home in France. Xiao Bo arrives to the same house and learns about Ye Jin's miscarriage and the depression that followed. The revelation pushes them toward a perilous emotional crossroads.

Sophie’s husband finds Ye Jin near a cliff and Xiao Bo tells her a tale of a fallen soldier to urge her on. They leap and their parachute opens, carrying them across the sky to a cathedral where they share a kiss. The epilogue shows that Xiao Bo and Ye Jin have two babies.