Jurassic World, the long-awaited fourth chapter in the Jurassic Park franchise, debuted its first trailer today, after a brief teaser on Monday promised that it would arrive on Thanksgiving. Universal provided the trailer as a treat for fans of the series, who have been long awaiting the first sequel in the series since Jurassic Park III released in 2001.

Fans shouldn’t expect any older faces from the series, but should get plenty of mileage from the new actors that appear in it, including Guardians of the Galaxy‘s Chris Pratt and Bryce Dallas Howard. The trailer below shows them (briefly) in action, amidst a park that has since opened up to a much larger crowd.

Jurassic World shows a much more evolved (and controlled) theme park surrounding dinosaurs, with crowds gathering to check out a number of the beasts up close, including an interesting sea show with a giant mosasaur feeding on a shark. However, that doesn’t stop Howard’s scientist from thinking how much more the park would benefit from a newly developed dinosaur, created by DNA.

Pratt, who will play an expert for the park, doesn’t think that’s such a hot idea, considering the results that could come from an experiment. They do it anyway, and, as you might expect, what follows is danger and excitement galore, as the team tries to stop the newly developed (and incredibly smart) creature from running havoc in the park.

This new chapter in the series, executive produced by Jurassic Park director Steven Spielberg and co-written and directed by Colin Trevorrow (Safety Not Guaranteed) will arrive on June 12th, right in the thick of the summer season. Considering the original Jurassic made $1 billion worldwide in ticket sales) and the star power of Pratt, it should have no problem making money.

However, there is some slight concern over the strength of the franchise. The follow-up to Jurassic Park, The Lost World, only made $618 million worldwide, while Jurassic Park III slid even further with $368 million worldwide.

Nevertheless, Universal has faith in its franchise, and judging by the positive buzz of the trailer, visitors will have no problem flocking back to this Park – even with the trouble that awaits inside.