Su Qinghuan never dreamed that she would accidentally take a strange man's mobile phone while running in a panic on a rainy night. I thought it was just a mistake, but I was entangled by the owner of the mobile phone, Lu Yanzhou - this second-generation rich man who was full of voluptuousness. He called her "secret lover" and even offered her a contract to pretend to be a couple. Su Qinghuan, who was aloof and obsessed with money, gritted his teeth and signed the contract in order to stop Lu Yanzhou's mouth, but unexpectedly fell into an entanglement that made people laugh and cry. The yandere love rival is secretly watching, the green tea best friend is sowing discord, the hypocrite ex is still haunting her, and Lu Yanzhou's pretending to be innocent and funny makes her gradually confused. When the contract expires, will this farce begin with the wrong mobile phone? Will they go their separate ways, or will they be deeply in love?