Rachel is a tomboy whose childhood friend is the handsome Farel. This friendship is tested when Farel admits that he has fallen in love with Luna. Wrecked by jealousy, Rachel has an accident and is forced to have her legs amputated. As Fate would have it, Luna is also seeking treatment for a heart disease at the same hospital as Rachel. A difficult choice lies ahead of Rachel: Would she be willing to make the biggest sacrifice and donate her heart to Luna, just to see her best friend find happiness?