Alicia is surprised to discover her long-estranged parents Howard and Jackie are planning to give their marriage another go. However, when old family friend Martin turns up at their surprise anniversary party, and seems to have a falling-out with Howard, it soon becomes clear there is a secret third wheel in their relationship. Meanwhile, Charlie balances his over-zealous wedding-planning with caring for a reluctant teenage football star, and Cal’s trust in Alicia is tested when he discovers she has a secret phone hidden in her locker