Johnny is a 25-year-old man, filled with sexual desire, who longs to have a real relationship with a woman. Every time he sees an attractive woman, he gets a nosebleed. His long-suffering mother Meng Jie is worried that his lust will get the better of him, and that he will end up getting a woman pregnant. But his life is changed on the day he decides to seek out baking lessons from Mary, a baking teacher who is 15 years older than him – and also happens to be a friend of his mother. Mary is wary of Johnny’s affections, and thinks that a relationship between them would be totally inappropriate. But Cupid has other plans for them. Eventually, she finds that fighting her feelings is a fruitless struggle – and finds herself seriously beginning a romance with the younger man. But things take a turn when Johnny must go abroad to Italy to study. And then the situation gets extremely awkward when Johnny’s stunned mother learns of Mary’s love for her son.