สัญญารักของฉันคือราชาแห่งโลกใต้พิภพ

Serena is a talented PhD, yet her fiancé Julian and stepsister Camilla frames her, and she ends up in jail. Three years later, Camilla bails her out, not to save her, but to force her into a humiliating deal. But somehow, she happens to save Damian, Julian's mysterious uncle, and makes a deal to be his contract fiancée. With Damian's support, she exposes Camilla's scandal and takes back everything stolen from her. When revenge is complete, true love forms out of the contract.