A new computer game craze hits Abbey Grove School, affecting both pupils and staff.

On a school trip, Alfie and Gulliver take their pupils to a petting zoo and ink museum.

Pickwell has designs on getting Fraser's job, and it is election time at Abbey Grove.

It's the Abbey Grove swimming gala and Alfie's class compete in the synchronised diving.

Mr Fraser decides Alfie is the right man to direct the Abbey Grove Christmas play.

With the threat of a staff redundancy the teachers of Abbey Grove go on strike.

Alfie tries to attend a book group, a LARPing club and a leaving party at the same time.

It's sports day and Fraser has hired the most inappropriate new teacher to oversee events.

After running him over, Alfie and his class raise funds for the caretaker's surgery.

Alfie never passed his biology GCSE, so he must resit the exam with his own class.

Alfie realises he can't go on teaching without his beloved class and quits Abbey Grove.

Class K are back for a careers day and a reunion that descends into mayhem. Meanwhile, Alfie has a decision to make – will he finally leave the school forever to be with Gulliver?

Stephen and Mitchell are told one of them will be fired so go to extreme lengths to save their jobs. Meanwhile, Fraser has accidentally started printing the entire internet.

Stephen is determined to find out who snitched on him about Class K’s trip to a drag brunch. Meanwhile, Fraser mistakes an Ofsted inspector for a Task Rabbit.

Hoburn tries a prison experience programme at the school to teach the kids discipline. Class K end up incarcerated with Stephen, who’s prepping an audition as a hardened criminal.

After Class K make Stephen feel old and irrelevant on his birthday, he goes to ridiculous lengths to prove he is still a trailblazer.

Stephen is desperate to get rid of Mitchell who has moved in after his girlfriend threw him out. So Class K and Stephen give Mitchell a glow up in the hope she’ll take him back.

Stephen wants to turn the school play into a showcase for his talents to impress an agent, but Hoburn has more sinister plans to use it as a way of closing the school down.

On the last day of Christmas term at Abbey Grove, drama teacher Stephen stages his own funeral to hear what the school will say about him when he leaves for his new job in a pantomime. But he is shocked to encounter the ghost of Alfie, who tells him he will be visited by three ghosts to show him the error of his ways. Alfie wants Stephen to care about teaching more than he ever did; but his happiness depends on the lessons he learns that night, when Stephen has an important decision to make about his career at Abbey Grove.