A photo of Su Yu meeting his mother goes viral, which he blames on Wu Bi. As a result, the two of them get into a heated argument.

Su Yu accidentally realizes Wu Bi’s secret, which leads to the relationship between them to reach a standstill.

Wu Bi is worried that his lie will be discovered by Su Yu, so he thinks of a way to cover it up.

Wu Bi learns that Su Yu had a past relationship with a female classmate Ye Wanying, which makes Wu Bi extremely curious.

San-yeong understands and sympathizes with Kang-mo’s decision, while Hae-sang falls into despair.

Something strange is happening at her school. Fa finds that someone is behind all these incidents, and it just so happens that there’s a new biology teacher named Ajin.

Sang Guk tries to leave the country before Gyeo UI catches her. However, he fails as she asks for help from Yeon Seok. Gyeo UI waits at the hospital where…

Seo-ha reckons with Ji-eum’s confession. Han-na and Ji-eum join forces. During a confrontation with Seo-ha, Lee Sang-hyuck reveals his motives.

Kawi returns to the past again but with the awareness of what his life in the future will be like without Pisaeng.

Bu Xia tells Jiang Chi how important he is to him, which makes Jiang Chi wonder about his own uniqueness.