There is a man who you want to protect. There is a brave firefighter Goo-sang, wife Soon-yeong, who loves Goo-sang so much, their daughter Seul-gi, and Seok-woo, who Goo-sang trusts like a blood brother. Goo-sang and Seok-woo have their own secrets. Goo-sang has incurable disease and Seok-woo loves ...