Oh! Brothers

Oh Sang Wu (Lee Jung Jae) spends his days working as a debt-collecting private investigator and a paparazzi photographer. His monotonous life shakes up when he learns that not only has his estranged father died, but he's now responsible for his father and his second wife's massive debt and he has a 12-year-old half-brother, Oh Bong Gu (Lee Bum Soo). Sang Wu's search for his father's wife leads him to find Bong Gu at a special needs school, where he learns that Bong Gu has a rare condition that makes him appear much older than he actually is. Sang Wu decides to put his brother to work with him, having Bong Gu pose as a gangster to threaten debtors. Will these schemes bring the two brothers closer together, or is it just a means to an end?