Cha Sun-Hee is a housewife and she is married to Bong Cheon-Dae. Her husband is currently unemployed. She has a twin sister, Cha Do-Hee, who works as a flight attendant. Although they are identical twins, they have completely opposite personalities. Cha Do-Hee becomes involved in a situation which leads to Cha Sun-Hee pretending to be her flight attendant sister. She then meets co-pilot Song Woo-Jin.
Moon Hee-kyung was born on December 22, 1965 and is currently 58 years old.