Saha cross-dressed as a woman in order to disguise himself as his twin sister who was supposed to be Kang Heetae's unlucky wife, but ran away that night. Saha met Kang Heesu; the younger brother of the sick Kang Heetae. Heesu felt obligated to take care of Saha who was in danger. As time passes, Saha slowly begins developing feelings for Heesu, "her" savior.