It's Frank's birthday but, this year, Doofus, Mary and Áine have decided to gift him an intervention. His life's stuck in a cycle, and they want him to break free. The intervention coincides with the return of one of Mary's old flames, Liam (guest star Brendan Gleeson) - a self-described 'wild rover', who's never really grown up himself, and it gives Frank the chance to see what his life will be like if he doesn't turn things around. Will Frank make the same mistakes as Liam, or will he finally be able to break his vicious cycle?