One Fine Day

To afford an expensive operation, Gun interrupts a drug deal and makes off with the gang's money.

In search of his long-lost sister, Gun travels to Korea.

Hae Won is pushed to her breaking point and runs away from home. Gun is there to help her along the way

After Gun stopped Park Tae Won from assaulting Hae Won, there is a reunion of sorts

Gun's past catches up to him and threatens to blow his cover with Ha Neul

The entire crew from the aquarium goes out for a seafood feast, but some employess have other things on their minds