Miles Teller, Jamie Bell, Kate Mara and Michael B. Jordan star in this reimagined story of the team of Marvel's superheroes known as the Fantastic Four. When four young, budding scientists are teleported to an alternate universe by a government project that hopes to learn more about our planet, they awaken realising that their physical forms have changed beyond recognition. Reed Richards (Teller) has gained the ability to stretch his body into unthinkable forms and lengths and is renamed Mister Fantastic, Ben Grimm (Bell) is changed into The Thing with a body of stone giving him indestructible super-strength, Susan Storm (Mara) becomes the Invisible Woman and is able to generate force-fields around herself, and Johnny Storm (Jordan) becomes the Human Torch with the ability to shoot fireballs from his body. Together, they must put their new-found abilities to the test and work as a team to save the Earth from the evil Dr. Doom (Toby Kebbell).

Everything is going well for the Mystery Inc. gang: they're enjoying a high profile, and the public adore them so much their hometown of Coolsville has even opened a special museum in their honour. But things take a turn for the worse when a masked villain tries to take control of the city using a Monster Machine that brings to life the gang's past enemies - including the 10,000 Volt Ghost, Captain Cutler and The Creeper - reproductions of whom are on display in the museum.

To make matters worse, a local TV reporter has got it in for Mystery Inc., airing a series of reports that call their bravery and intelligence into question.

Can Scooby, Shaggy and the gang regain their credibility and vanquish the dastardly Monster Machine operator?