A policewoman is on a secret mission to South Korea, disguising herself as a tour guide to apprehend a fugitive.
Sang-hyun is always struggling from debt, and Dong-soo works at a baby box facility. On a rainy night, they steal the baby Woo-sung, who was left in the baby box, to sell him at a good price. Meanwhile, detectives were watching, and they quietly track them down to capture the crucial evidence.