People are dying in Central Park and the Swamp Thing has lost contact with the Green and can't enter. He turns to Constantine for help.
This is a pretty straight-forward story. John actually helps out, and with only one slightly crappy move everything gets pretty well taken care of. No unusual twists, no typical John betrayals, just a standard team-up. I suppose that in itself should be kind of refreshing, but it also wasn't really exciting. It seem that there's some force building magical power in New York, though, that speaks to a larger story, but that's for future issues.
Solid magical team-up, but nothing spectacular.