Here is the official synopsis for the film:
SONIC THE HEDGEHOG is a live-action adventure comedy based on the global blockbuster video game franchise from Sega that centres on the infamously brash bright blue hedgehog. The film follows the (mis)adventures of Sonic as he navigates the complexities of life on Earth with his newfound – human – best friend Tom Wachowski (James Marsden). Sonic and Tom join forces to try and stop the villainous Dr. Robotnik (Jim Carrey) from capturing Sonic and using his immense powers for world domination.
Directed by Jeff Fowler from a script written by Patrick Casey, Josh Miller, and Oren Uziel, the film features the voice talent of Ben Schwartz as the titular character and stars James Marsden as sheriff Tom Wachowski, Jim Carrey as Dr. Ivo Robotnik, Neal McDonough as US Army Major Bennington, Tika Sumpter as Mrs. Wachowski, Lee Majdoub as Stone, and Frank C. Turner as Crazy Carl. Adam Pally, Natasha Rothwell, Debs Howard, and Elfina Luk also star.
Sonic the Hedgehog is currently available on digital release.
Source: Comicbook.com