Josh attempts babysitting his new sister and charming his new housemate. As his house fills with semi-clothed twentysomethings and drunk, wary parents, Mum arrives with a sobering surprise.

Tom meets a cute girl, Josh meets an odd boy, and a beer pong game gets really weird at a party. Mum is admitted to a psych hospital; Josh meets her fellow patients and feels strangely at home.

Josh is in a tizz as he prepares for a surprise date with Geoffrey; Arnold checks into mum's hospital; dad and Mae panic over Grace's poo, and Tom finds himself in a bizarre love triangle.

Niamh finds out about Jenny, Hannah joins a choir, Mum gets some shattering news, and Josh has a disastrous date, before an accident brings a car trip with Patrick to an unexpected end.

A plumbing misadventure leaves Josh short of cash. Claire returns home. Mum and Ginger have a fight and Jenny's school play provides a backdrop for romance and humiliation.

Patrick stomps on Josh's heart. A funeral leads to a disturbing encounter for Tom and Josh takes the psych patients on a trip to the zoo.

Mum and Josh go hiking in Tasmania. There are some funny and revealing times. Mum cries herself to sleep a lot and gets trapped in a waterhole.

Patrick moves out. Tom eats Josh's truffled mac and cheese, so Josh barricades him in his room all day. Arnold reveals something personal to Josh. Dad forces Josh to find a job.

At Josh's first day on the job, tempers rise. Dad tells Josh he wants to propose to Mae. Arnold's psychiatrist insists Josh and Arnold can only go on a 'safe date'. Complications ensue.

Josh and Arnold go clubbing and run into an out-of-it Patrick. Tom orders a prostitute, Arnold has an anxiety attack, and Dad finally proposes to Mae.