To repay a debt of kindness, Neil signs a secret contract with Keira's father stating that he will marry Keira for five years and help her recover from a painful breakup with her first love, Simon. During their contract marriage, Neil is attentive and caring towards Keira, but she never treats him as anything more than Simon's substitute. When the contract comes to an end, Neil discovers Keira's persisting infatuation with Simon and finally decides to divorce her. When Keira sees the divorce agreement and learns from her father of Neil's departure, she is overcome with regret and travels the world searching for Neil, ultimately realizing that the man she lost was truly in love with her. However, it's all too little too late, as Neil has already embarked on a new, promising path and left her behind for good.
