Raymond is excited because his ex-girlfriend is moving back to town. His roommates mess with him but also encourage him stay calm when he meets her. A potential new roommate comes to look at the fourth bedroom.

The boys decide to throw a party to celebrate Michael's 30th, but he is reluctant to join in the festivities after a huge argument with Jane. Raymond invites the object of his affections, but is dismayed to discover he has some competition.

Barry walks out of his computer class to launch his own brainchild "The Boland Corporation".

Michael is devastated to learn of Jane's pregnancy and turns to the bottle to console himself, while Allison takes a depressed Raymond and Barry to Donegal to meet her fiance.

Raymond and Allison cannot shake the holiday fever they have picked and try to have a cheap day out in Dublin. On discovering he is about to be a father, Michael is inspired to look for work, and Barry also has his own dreams to pursue.

Raymond learns his ex-girlfriend Kate has been involved in a car accident and rushes to her hotel bedside - where she leaves him shaken by confessing her love for him.

Allison's fiancee visits Dublin and has a bone to pick with Raymond.

Raymond gives serious thought to selling up and moving to the countryside, convinced there's no future for him if Allison leaves town with Mark. Meanwhile, Michael gets an emergency call from Jane, who's ben taken into hospital.