Cat & Cathy go to an adult maths GCSE class where the sexy teacher causes ructions. Tess takes a job in the worst place possible, and Angela resorts to kidnap to win back Peter.

Cathy is excited to introduce her siblings to lambing season at Auntie Dawn's farm, but Tess brings along an unwelcome visitor and Cat brings an unwise gift.

In a bid to heal his rift with Angela, Callum is lured to an eventful Northern Soul Revival. Next day, their Dad Colin still has surprises for his family from beyond the grave.