Straight-laced Luke inadvertently gets into trouble when his girlfriend's brother, Jason, decides to rob a bank. The duo are sentenced to the Sunnybrook Young Offender Institution. Once there, Luke finds himself in difficult situations and becomes reliant on Jason's street knowledge; unfortunately, Jason's advice proves useless. Under the watchful eye of prison officer Dawn and her colleague, Greg, the lads adjust to life on the inside.

• Elis James
• Kadiff Kirwan
• Cariad Lloyd
• Ricky Champ
• Theo Barklem-Biggs
• Selom Awadzi