On the day Avery is supposed to get married, she catches her boyfriend cheating and impulsively marries Sebastian, a stranger whose own fiancée has stood him up. She never expects her new husband to be an incredibly powerful billionaire. They agree to stay married for one year without falling in love, but as they face one crisis after another, their feelings grow deeper. From her clingy ex and demanding family to blackmail by her former bully and the return of Sebastian’s first love, he always stands firmly by her side. Then Avery discovers that Sebastian is the man who changed her life ten years ago, proving that their accidental marriage was destined to become true love.