Remember sitting on a melted Mars Bar on the way up to a hot summer wedding? The lyrics to songs by Fairground Attraction? Photocopying your face out of boredom on a holiday temp job? The friend who always took a photo of you on a bad hair day? Yes?

So does Rachel, now out of University but doing one of those 'Look, no hands!' jobs in a PR firm. So when her best friend Alex persuades her to join in with a celebratory weekend in the Lake District with some old friends, it is with mixed feelings. For though Rachel, now happily involved with her photo-journalist boyfriend Finn, remembers the good old days; the fun, the laughs, the gossip; she also remembers the bad bits, not least the malice with which actressy Caroline behaved towards her. Not one for holding back, Rachel goes forth and heads North. After all, it could all be perfect...