WATCH: ‘Jurassic World’ trailer debuts

ABOVE: Watch the trailer for Jurassic World.

TORONTO — The first official trailer for the long-awaited Jurassic World went online Tuesday.

It starts by showing regular people enjoying what is easily the most awesome theme park experience ever.

But things get dark after a scientist (Bryce Dallas Howard) declares: “We have our first genetically modified hybrid.”

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Cue the dramatic music. Enter Chris Pratt.

“You just went and made a new dinosaur?,” he asks. “Probably not a good idea.”

He’s right.

Chaos ensues when it’s discovered that the man-made dinosaur is on the loose.

Jurassic World, based on the characters created by Michael Crichton and executive produced by Steven Spielberg, is set to open in cinemas on June 12, 2015.

The 1993 original, Jurassic Park, grossed just over $1 billion at the worldwide box office. A 1997 sequel, The Lost World, earned another $619 million and Jurassic Park III made $369 million in 2001.