The Turtles' fourth feature film, entitled simply TMNT, was released March 23, 2007. Unlike the previous films, it utilized 100% computer-generated imagery, produced by Imagi Animation Studios and distributed by Warner Bros. Pictures and The Weinstein Company. According to a press release, "the PG-rated movie will derive its tone from the original comic-book series and will be slightly grittier than the previous live-action pictures. The storyline focuses on an ancient legend of five brothers and thirteen monsters, taking a giant leap from any preceding turtle movies yet gave small evidence to the fact that the 3 movies had preceded this one (including showing the magic staff from Teenage Mutant Ninja Turtles III, the canister the 'ooze' came from in Teenage Mutant Ninja Turtles II near the ending, and Shredder's helmet from the original Teenage Mutant Ninja Turtles film). The animation was created in Imagi's state-of-the-art facility in Hong Kong."
The movie takes place after Shredder's defeat, with the team essentially broken as Leonardo is training in Central America, Donatello and Michelangelo have jobs, and Raphael spends his time as the vigilante crimefighter 'Nightwatcher'. Leonardo returns when Max Winters, an immortal warrior who tried to take over the world 3,000 years ago, begins hunting for alien beasts and stone statues of his former Generals. However, tensions begin to rise between Raphael and Leonardo over the leadership of the team. The Foot Clan also make an appearance, with Karai leading them. It is hinted towards the end of the film by a comment by Karai that the Shredder is either not dead or there is a new incarnation of the Shredder in the Foot Clan. Hopefully this means that there will be a sequel!