Kwang-soo married Lami, a former nightclub hostess working under his mother Sera. Living together, Sera and Lami are in-laws, friends and somehow completely strangers. While living with huge credit card debts, they are asked by Kwang-soo to retrieve a diamond worth five million dollars that Kwang-soo’s friend choked on and buried with him. Kwang-soo was supposed to steal the diamond and give it to his boss but he and his friend stole it and ran away. His boss found out and chased them at which point Kwang-soo’s friend accidentally swallowed and choked on the diamond. The boss will stop at nothing to find out where the diamond is by doing everything to get Kwang-soo out of jail after he turned himself in to the police. Now, Sera and Lami are searching for the diamond themselves with the gang boss pressuring them with everything he’s got.