James REALLY gets these characters.

Basically the turtles get sucked into Gotham and are trying to stop shredder from being his normal evil self. Batman and the turtles meet, become friends, train together, and work to stop the evil shredder and most of Batman's rogue gallery. It's fun, goofy at times, kind of bloody which I liked, but the best part is each character's voice sounded like the real one from each series. Also the art? AWESOME. Some really good fights and cool poses. Overall well worth the reading, the only negative is sometimes a bit wordy when not needed. James has gotten a lot better about that in the last few years.