Stars of The Dumping Ground surprise two of their superfans. Sam and Mark go undercover in In Yer House Extreme and there's music from boy band Union J.

Comedian and presenter Iain Stirling and Californian boy band The Tide join Sam and Mark in the studio to kick off the weekend. The boys take on two Olympians in a 'Face Off' challenge, and who will survive the avalanche in Ball Fall?

Sam and Mark are joined by Matilda Ramsay as she takes a turn on the Wind-Up Wheel. Two sets of twins from the same family take on each other to win a stash of prizes, and there is music from Gavin James.