Cha Sun-Hee is a house wife and she is married to Bong Cheon-Dae. Her husband is unemployed. She has a twin sister. Even though they have been identical twins, they have opposite characters. Cha Do-Hee becomes associated with a situation which leads to Cha Sun-Hee pretending to function as flight attendant sister. She subsequently meets copilot Song Woojin.