While Arnold is away at a maths summit, Josh takes advantage of his new open relationship status by hooking up with a stranger; Tom challenges Josh and Claire to smash his piñata.

Josh agrees to visit Ben in hospital before his brain surgery, but keeps it a secret from Arnold; Tom discovers he has chlamydia and goes to ridiculous lengths to try and treat Ella without losing her.

As Josh waits to hear if Ben survives his surgery, Josh, Tom, Claire, Ella and Arnold find themselves stuck in the cabin of a giant observation wheel.

Josh is single and ready to mingle, but a string of dating disasters has him wondering if it's all worth it. Meanwhile, Hannah has taken up boxing, while Mum seems to have taken up fighting - with anyone about anything.