Yeon Boon-hong becomes an unwed mother after being betrayed by the man she loves but she is still determined to live her life. Boon-hong became pregnant with Gi-suk's child but he didn't want the child. He told her to get an abortion but she was unable to do so. Her friends Lee Joo-young and Lee Sun-hee died in a boating accident. Boon-hong was also in the boat with them but she survived. Sun-hee was Joo-young's girlfriend but due to some misinterpretations, the Lee family thought that Boon-hong was Joo-young's girlfriend and was pregnant with Joo-young's child. Boon-hong moved into the Lee's house to escape her difficulties. She let the family believe that it was Joo-young's child. Lee Joo-hyuk is Joo-Young's older brother and falls for Boon-bong. What happens when the Lee family finds out that Boon-hong lied about the baby being Joo-young's? How will Joo-hyuk feel towards her?