Mrs Brown's Boys is due to return to BBC One this Christmas for two new specials: Mammy's Mechanical Merriment and Mammy's Micky.

The plot details for the episodes are as follows:

Mammy's Mechanical Merriment

It's Christmas in Finglas once again. Agnes has been recruited to the church choir, but she's under strict instructions from Father McBride that there's to be no singing and certainly no dancing. That's not the only thing off-limits, a Christmas tree shortage means Buster has to get even more creative than usual trying to impress Agnes by any means necessary. Meanwhile Dermot and Buster have organised this year's festivities at Foleys and are holding a Murder Mystery night in aid of alcoholic greyhounds. What could possibly go wrong?

Mammy's Micky

This New Year is all about reconciliation and fresh starts in the Brown household but not everyone seems to have got the message. Grandad's brother, Micky, is fresh out of prison when he decides to stop by for a visit. Everyone except Grandad is suspicious when he shows up asking for five thousand euro to invest in a South African gold mine. Winnie, inspired by Cathy's book, is on a daredevil mission to change the trajectory of her life while Mrs Brown's boys are forced to have a heart to heart.

Broadcast details have yet to be revealed, but BBC One normally shows an episode of the sitcom on Christmas Day, and another on New Year's Day.