In-ah applies for the Marriage Promotion Project in hopes of being matched with Cheol-hee. The Marriage Promotion Team is shocked by the third-generation chaebol's interest in an island bachelor, but Ha-na worries about the differences between the two. Meanwhile, Cheol-hee grows curious about the past connections among Ha-na, Ki-jun, and In-ah, as new tensions unfold in their interactions.

Ha-na's suspicions about Cheol-hee grow after she sees him following a mysterious man. Meanwhile, the Marriage Promotion Team faces a tough challenge as they try to find a suitable match for Ji-seok, whose introverted nature complicates their efforts. As secrets and challenges arise, tensions within the team begin to mount.

Cheol-hee and In-ah officially match online. The two go on their first date that In-ah planed for the two. Meanwhile someone vandalizes Ha-na'a car. Cheol-hee tries to make sure that Ha-na is safe, but strange things continue to happen to Ha-na.