After "Bridget Jones's Diary," Grant continues to take on the role of charming cad. This time, he's Will, a 38-year-old bachelor who doesn't work thanks to a legacy from his father and has never made a lasting emotional commitment to anyone. Will's latest dating scheme is to pretend to be a single parent and join support groups so he can hit on the single mums. This is how he meets Marcus (Hoult), the 12-year-old misfit son of the seriously depressed Fiona (Collette). Will likes Marcus despite himself and becomes his confidante. And he finds a romance with single mum Rachel (Weitz) but that's almost besides the point. Adapted from the novel by Nick Hornby.