"So, in the end, this contract is about you helping me." Ha-jin has endured relentless bullying since childhood just because of his homosexuality. At a moment when he wanted to give up on life, fate brings him a second chance through the angel Kael, who appears as if by destiny. In exchange for getting rid of his stalker, Ha-jin agrees to an unfair(?) contract from the delinquent angel Kael, who demands his soul. However, as time goes by, this angel... starts to soften? A romance of mutual salvation between Kael, who was lonely without a place to rely on, and Ha-jin.