Robot Wars launch show presented by Dara O Briain and Angela Scanlon.

Forty teams of amateur robot fighting enthusiasts battle it out over a series of rounds in a huge purpose-built arena, aiming to become the Robot Wars champion. It's not just the competition they have to contend with, as the arena is patrolled by four huge House Robots which are geared up to attack anyone who strays into their Corner Patrol Zones. There are also fire, spikes, the Flipper and the Pit, dangerous hazards designed to cause maximum damage to the competitors. In between their fights, teams have time to repair their robots and plan for their next fights in the pits area.

In this episode, the most famous fighting robot in history, Razer, faces up against a host of other fighting robots for the chance to become the Robot Wars champion. Eight teams made up of families and friends from across the country put their homemade robots to the test. The winner at the end of this show will go forward to the grand final.