'Percy Jackson' Will Go 'Bigger' Than Ever, Logan Lerman Says

The 'Sea of Monsters' star teases what's new for the Olympians.

Monday, the first trailer for "Percy Jackson: Sea of Monsters" debuted exclusively on MTV News, and the preview was fit for the gods (and half-bloods). After three years of waiting, Percy and the rest of the Olympians are back for another adventure, this time to find the legendary Golden Fleece.

To get even more mythological goodness out of the preview, MTV News' Josh Horowitz recently sat down with star Logan Lerman to find out what would be different this time around. "The first one was big," Lerman said of 2010's "The Lightning Thief. "It's definitely a bigger story [in 'Sea of Monsters'], bigger monsters, bigger effects, 3-D."

As the trailer sets up, "Sea of Monsters" brings back many of the characters from "The Lightning Thief," but this time, their home is in danger. "It takes place shortly after the end of the first one, and someone has come and poisoned the tree that protects our camp," Lerman said. "All of the half-bloods are in danger of monsters coming and killing them, so they have to go on this huge quest in the Sea of Monsters to find the Golden Fleece to revive the tree and save the camp. It's a huge adventure."

Since the movie is called "Percy Jackson: Sea of Monsters," it wouldn't be asking too much to expect a few monsters to show up onscreen over the course of the film, and in that category, Lerman assured MTV News that they can deliver.

"There are a good number of monsters. It won't disappoint," Lerman said. "We did see them on set. It was cool. A lot of them were actually in person, things that would be actually on camera that they'll redo with visual effects. It was great. We had actors instead of a ball or a mark on a green screen."

You can catch the rest of the interview with Logan Lerman during "Rated MTV," airing Friday, April 5 on MTV.

"Percy Jackson: Sea of Monsters" opens on August 16. The movie also stars Alexandra Daddario, Stanley Tucci, and Nathan Fillion.

Check out everything we've got on"Percy Jackson: Sea of Monsters."