Episode 1

Four pairs of best friends - Thomas and Oliver, Abigal and Ceriane, Alfie and Cassien, and Amina and Doreen - are put through their paces. They tackle Tube Strike together, then are put into the Mixer, a giant selector machine, which splits everyone up and spews them out into new pairs. Each contestant comes face to face with the enemy: the person who is now their frenemy.