After a big night of partying for her 30th birthday, Alice is forced to deal with the consequences of a spur-of-the-moment decision.

Our trio come to terms with their unusual relationship as Alice's mother threatens to visit; Mitch and Richie set about building a flat pack nursery.

Alice, Mitch, and Richie attend their first antenatal class, where Alice and Richie are forced to face their doubtful abilities as future parents.

When Alice's tall, handsome and rich ex, Ben, turns up, it sends Mitch's pre-existing insecurities into overload.

It's Richie's birthday, and new boyfriend Dave has special plans. The trouble is that Alice has her own, more special, plans, as does their unborn baby.

When all the mothers descend on the flat, the boys feel the need to escape for the night. They meet a girl named Wendy who reminds them of a certain someone.