Judging from the many different interpretations of the Teenage Mutant Ninja Turtles over the past 25 years, it's hard to argue with the summary on the upcoming "Turtles Forever" movie promo poster:

"Sometimes four turtles just aren't enough."

The affable party dudes from the '80s are teaming up with their somewhat grittier (and razor scooter tricking) counterparts from a few years back in 4Kids' pending crossover special.

There's not much news regarding the plot of the film, but there's a few plot points indicated by the poster. Shredder seems to be the main baddie - as in only one Shredder, meaning that perhaps there's something to inter-dimensional/time traveling that the film will have to explain.

Aside from that, I'm just happy to see the Turtle Blimp.

[Via Toplessrobot]