For many, New Year's is the perfect time for change, which is exactly what Will (Hugh Grant) is in for in this film. A 30-something-year-old Londoner, Will is wealthy, immature, irresponsible, and a womaniser. But all that changes on New Year's Eve when a 12-year-old boy named Marcus walks into his life. In a moment of fear, Marcus turns to Will for support and reveals his mother has been battling depression and suicidal thoughts. With no father figure in his life, he grows attached to Will and vice versa. Will eventually realises that his partying days no longer fulfil him, playing a parental role in Marcus's life does.