Visionary director Guillermo Del Toro goes mega with this sci-fi blockbuster featuring humungous monsters - Kaiju - rising from the depths of the Pacific Ocean and threatening to take over the planet. Mankind fights back with giant robots - Jaegers - controlled neurally by air force pilots led by Jaeger master Idris Elba. But even they seem to be fighting a losing battle. Step forward potential saviours ex-flier Charlie Hunnam and untested trainee Rinko Kikuchi. Transformers get wet in this bone-jarring metallic monster movie.