Aisling O'Halloran is happy with her futon, her flat, her cat and her job as a party caterer. She doesn't like to do anything impulsive - she's a woman in complete control. If she can't have relationships without complications, then she's quite happy to carry on alone.
But when she's employed to cook the supper for Dan Morland's proposal, she suddenly becomes party to someone else's relationship - in all its tangled, heart-breaking complexity. As she watches Dan try to sort out the mess his emotions have got him into, Aisling realises that she's not the Ms Invulnerable she thought she was, after all.
