An error with the luggage system creates confusion at the airport. Trying to handle the issue, Do Kyung proposes that they use the luggage system in Terminal 2, which is not yet open. Meanwhile, Ji Sung asks Jae Moo to let him stay at the airport when Jae Moon tries to send Ji Sung abroad. Fortunately, Ji Sung manages to stay and starts tailing an expert note forger who enters Korea. At the same time, Do Kyung receives a call blackmailing her with a bomb in the airport.