Vet Mark Evans is on a mission to break the cycle of violence between the world's deadliest predators and humans, basically, they kill one of us, we kill a shed load of them. He thinks we can all live alongside each other peacefully if a radical experiment he wants to try works. He attempts to train crocodiles to associate the sound of a bell with electric shocks, but it looks like it may not go exactly to plan when one of them turns on him. Oh dear, maybe not such a good idea after all there Mark.