Jaemin and Guest love each other deeply, but Jaemin's father, a strict and violent businessman, despises Guest for coming from an unremarkable family. Jaemin's father blackmailed Guest by using their sick younger sibling as a hostage, eventually forcing Guest to decide to break up with Jaemin. Jaemin is unaware that his father blackmailed Guest to drive them apart.

He smiles bitterly. Is something going on lately?