I Am Happy

Se-ha who is physically handicapped and Dong-gu who is mentally handicapped are not their own brothers. But while living 20 years together, the two became indispensable to each other. One day, the mother of Dong-gu suddenly visits him and acts as his guardian.

This is the story of a dysfunctional New York family, and their attempts to reconcile

Renn Wheeland returns home to Cleveland for his mother's funeral. Once there, he forges new relationships while healing old ones, before confronting his problems and trying to face his grief.

Former teen idol Nam Hyeon-soo is now in his thirties and working as a radio DJ. One day a young woman named Jeong-nam shows up and claims to be his own daughter. She also has a son whom she claims to be Hyeon-soo's grandson. Their relation is proven via DNA tests by Hyeon-soo's brother. This leads to Hyeon-soo attempting to avoid a scandal concerning him having children "unknown" to the media.

A newlywed couple cancels their honeymoon and returns to the snowy Midwest to make the funeral arrangements for their best man, who died unexpectedly after their ceremony.