Erin is over the moon when she becomes editor of the school magazine, Orla's obsessed by step aerobics, and Da Gerry is in trouble with Ma Mary. And there's romance for Aunt Sarah.

A new English teacher arrives at Our Lady Immaculate and the gang find themselves inspired.

Ma Mary and Aunt Sarah go all out to prepare for the school reunion. Will the truth come out about what really happened on leavers night 20 years ago?

There is no bigger night in Derry than Halloween, and the gang have miraculously secured tickets to the gig of the century and the chance to meet their idol, Fatboy Slim. But when Da Gerry arrives unannounced, it becomes clear that life will never be the same again for the friends.