Seo Dae-han

Seung-ryong owns a small toast shop, who is sick from taking in briquette gas in the past after his parents died. One day, his first love comes back to Korea, and they become close. However, he finds out that his little sister is sick.

Nine-year-old Hani is a troublemaker who isn't afraid of anything. A precocious punk, his school friends are all his underlings, and even his family members are under his control. He especially considers his elder brother, HanByul, who often complains of being sick, his greatest target. Until one fateful day, HanByul collapses at home and is rushed to the emergency room and the worst nightmare for any parents becomes a reality - he is diagnosed with cancer. The film is based on a true story.

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 brings them together.