Chris Bullzini is Britain's top high wire walker. One slip could mean death. After running away and joining the circus as a teenager, Chris turned a love of street performance into a career. From international big tops to crossing towns and cities high above the streets, he has done it all. But excelling at an unusual art form comes at a cost. Time, money, relationships. and then there is the constant risk of falling to his death.

We go up on the wire with Chris as he stages his most daring walk yet, an uphill climb 220m long across Norwich city centre. This is a risky
business and things don't always go to plan, but Chris knows he must keep pushing his limits. If he stops performing, he will lose his unique skill.

How then will he cope when the only life he knows is threatened by the greatest challenge he's ever faced?