A group of lads head to the Sundown Festival in Norfolk for an unforgettable weekend of partying hard, but for two of them the weekend will be unforgettable in other ways... as their parents will be tagging along too. Ladies' man Mark lives in St Neots with his mum Jane and dad Phil. The younger of two sons, Mark enjoys plenty of home comforts, but keeps his personal life to himself. He's let his parents down in the past when he was expelled from a college course for boozing. So now they want to see what mystery man Mark really gets up to in his private life. Just down the road is Mark's 19-year-old mate Connah. For now, he's still living at home with his mum Toni, his dad and two brothers, but he's planning to buy a house with his girlfriend. Unfortunately his love of partying is putting a sizeable dent in his savings - which mum Toni knows absolutely nothing about. Now she's following him to the festival to find out if he is really mature enough to have his own house.