Ace Valentino is a cold businessman, always having a strong and scary aura surrounding him, which never scared Ava Kace, his best friend. Despite living in two different states, they always managed time for themselves. However, Ava Kace, the perfect daughter of one of the billionaires, never expected to marry her best friend, the number one billionaire, Ace Valentino. When Ava learns the lies of her fiance, she forces Ace into marrying her with some conditions-including Ava has to live in a joint family. Will the marriage with the billionaire best friend turn out to be heaven or hell?