In Boyle, Ireland in 1989, Martin Moone has made a somewhat unusual friend.

Fed up with being caught between two warring parents, Padraic disappears with Martin. Crunchie Haystacks finds it hard to cope.

Like all young lads in the early 90s, Martin wants needs a Sega Mega Drive. Be gone slinky, hello magic machine. But Liam is having none of it: not only is this whole computer thing just a fad, work is slow and money is tight.

While the Moone house is bursting at the seams, Martin and Padriac try to film a hilarious home video.

Martin befriends new boy Trevor in order to dine on his family's regular gourmet meals while Debra is too distracted with political campaigning to feed her youngest child. Ma Moone and her friends hope to incite girl power in the local area by canvassing for politician Mary Robinson, but they're less than thrilled when they're forced to turn to fishy rich man Francie Feeley for funding.

Martin is about to start secondary school, and with this new era comes attending his first school disco.

After crop circles appear in Boyle, Martin attracts media attention when he claims his donkey has been abducted by aliens.

Dessie works on a new business venture as he plans to open Boyle's first Catholic book shop. Martin, meanwhile, embarks on a building project.

Using the battle for the bathroom as an opportunity to catch extra zeds, Martin falls foul of Sinead's pranks when she covers him in make-up while he's asleep. Unable to get to a mirror, Martin heads off to school unaware of his Boy George-esque look...

Uncle Danny arrives just in time for Martin's birds-and-the-bees talk with Mum and Dad. Sean seeks solace with other imaginary friends when Martin upsets him.

Fidelma joins the church choir while Martin's confirmation service leads to an epiphany.

Martin is appalled when his dad takes the family on holiday during the 1990 World Cup, so he tries to hitch-hike back to Boyle to watch a vital match on home turf.

Martin and Padraic leave on a voyage of a lifetime on their Halloween ghost ship, but things soon take an unexpected spooky turn.

It's Martin's final week at primary school and he wants to leave a mark. Fidelma manages to drop a bombshell.

Could love be in the air when Martin's new classmate and neighbour Majella catches his eye? Father Linehan plans a memorable stag do for Dessie.

Celebration is in the air as St Patrick's Day dawns, but the Moones are having a different kind of party today: Fidelma's wedding.

Martin and Sean discover Grandad also has an imaginary friend.