Twentieth Century Fox has released the first trailer for director Thor Freudenthal’s Percy Jackson: Sea of Monsters, a sequel to 2010’s Percy Jackson and the Olympians: The Lightening Thief, both adaptations of Rick Riordan’s “Percy Jackson” book series..

Sea of Monsters finds Percy battling evils from the deep while in search for a mythical Golden Fleece. The film stars Logan Lerman as Percy, Alexandra Daddario as Annabeth Chase, daughter of Athena, Jake Abel as Luke Castellan, son of Hermes and Booker T. Washington as Percy’s friend Grover.

New faces include Nathan Fillion (”Firefly,” “Castle”) as Hermes, Anthony Head (The Host) as teacher Chiron and Leven Rambin (Hunger Games) as Clarisse La Rue, daughter of Ares, the God of War. The film arrives in theaters on Aug. 16.

Peep it at MTV.