A brother and sister are separated when their parents die in a car accident. 15 years later, with Seo Gun living in Australia and Park Hae-won living in South Korea, fate reunites them.

A brother and sister are separated when their parents die in a car accident. 15 years later, with Seo Gun living in Australia and Park Hae-won living in South Korea, fate reunites them. Gun has been adopted by a family of swindlers and is desperate for money to pay for a heart operation for his half-sister. When he learns that Hae-won had been adopted by a wealthy family, he rushes to South Korea to set up a scam. However, there are many family secrets that must be revealed before the two can be truly reunited and find true love.—ley-moon

What happens to a brother and sister who are adopted by different families and then reunited as adults? Seo Gun (Gong Yoo) and Seo Ha Neul (Sung Yuri) become brother and sister legally when Gun's father marries Ha Neul's mother when they were kids. But when their parents are killed in an accident, Gun and Ha Neul are sent to an orphanage and then adopted by different families.