Orion, a once-heir ruined by his ex Kael, is forced to wed Caspian, the Thorne family CEO who has pretended to be comatose for ten years to root out internal traitors. Under constant humiliation from Kael and his accomplice Sylas, Orion takes care of the "vegetable" Caspian and gradually finds warmth hidden behind his cold mask. Secretly acting as mysterious tycoon Mr. L, Caspian silently protects Orion, funding his venture and clearing all traps set by their foes. The two cooperate to defeat scheming relatives, fraudulent rivals and underground hitmen, reclaim Orion’s family enterprise and win justice. After countless dangers, misunderstandings and jealous entanglements, they tear up the transactional marriage contract and hold a genuine grand wedding, gaining pure love amid cruel business and family power struggles.
