The photos and plot are both from Paramount's press book, which is being handed out at CinemaCon. The photos show April O'Neil taking photos and Michelangelo falling, head first, off a moving jeep.
Here's the official synopsis:
The city needs heroes. Darkness has settled over New York City as Shredder and his evil Foot Clan have an iron grip on everything from the police to the politicians. The future is grim until four unlikely outcast brothers rise from the sewers and discover their destiny as Teenage Mutant Ninja Turtles. The Turtles must work with fearless reporter April and her wise-cracking cameraman Vern Fenwick to save the city and unravel Shredder's diabolical plan.
Teenage Mutant Ninja Turtles comes to theaters August 8th, 2014 and stars Megan Fox, William Fichtner, Will Arnett, Alan Ritchson, Jeremy Howard, Noel Fisher, Pete Ploszek, Danny Woodburn. The film is directed by Jonathan Liebesman.