My Little Baby

A top detective in the violent crimes department suddenly becomes the guardian of his 6-month-old niece.

Jung Han gets into an awkward predicament while joining a baby yoga lesson with older women from the same village for the first time in his life; Jung Han finds out that Ye-seul, his first love, lives in the same apartment, raising her son Hoon-gu on her own after a divorce; Ye-seul tries to help Jung Han in many ways.

Jung Soon visits Jung Han to see Eun Ae.

Ji-young and Ye-seul have a big fight over child issues and Jung-han tries to comfort Ye-seul, but this attempt leads to misunderstanding; Ji-young, known as an expert in parenting, devises a scheme to kick Ye-seul's son Hoon-gu out of the kindergarten but fails in convincing other mothers.

Jung-han nearly loses his mind because of Eun-ae starting to suffer from enteritis all of a sudden; he calls Mrs. Ma to account over Eun-ae's sickness, claiming that it is because of her nail art; Ji-young prepares for her daughter's birthday party.

Mothers in the apartment, worrying about a child molester in the vicinity, put up a notice prohibiting urination on the street after traces of someone's urination were found on the apartment wall; Jung-han gets misunderstood as a pervert by these mothers.