The Movie Insider.com

Normally, the mantis shrimp only grows to about a foot long or so, but in this movie, a seven-foot-long one shows up in England (by way of the Philippines). Pub owner and failed boxer Bill (Kevin McNally) buys the creature, seeing it as his chance to become rich and famous, training the ferocious crustacean to box. Hitting the road with his amateur boxer best friend, Steve (Perry Fitzpatrick), a trainee hairdresser (Louise Mardenborough) and the giant sea creature, Bill heads to London to convince a TV network to feature the crustacean on an 'American Gladiators'-style event hosted by Ulrika Jonsson.