Warner Bros. and Legendary Pictures have released the first trailer for Guillermo Del Toro’s eagerly anticipated mecha-inspired robot movie Pacific Rim, starring Charlie Hunnam (“Sons of Anarchy”) and Academy Award-nominee Rinko Kikuchi (Babel).

Pacific Rim finds humans manning huge two-people robots to combat an invading species of giant sea monsters. When the battle takes a turn for the worse, a troubled former pilot (Hunnam) and an untested trainee (Kikuchi) set out to fight the beasts with an older robot model.

Costars include Idris Elba (Prometheus), Ron Perlman (“Sons of Anarchy”) and Charlie Day (“It’s Always Sunny in Philadelphia”). Pacific Rim marks Del Toro’s return to directing since helming 2008’s Hellboy II: The Golden Army. It arrives in theaters on July 12.

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