Five established comedians take on the challenge of mentoring and training five celebrities to perform a stand up comedy routine in aid of the Stand Up to Cancer charity.
The celebs are thrown in at the deep end as their mentors put them straight on stage to gauge their natural comedic talent. Katie struggles with no script, Curtis gets cringey and Shaun draws a blank.
There's last-minute nerves and some comedy cramming, before our celebs step on stage and deliver their 'tight five'. Punchlines are fluffed and one act gets booed, but who will have the last laugh?