what is this play and what play book do I find it in....

pretty simple.....both the halfback and fullback run circle routes out of the backfield, pretty hard play to stop since the defense doesn't know which back your throwing it to...I know there is a play similar in the run and gun in the I Form Normal called TE Option that has only the halfback running a circle route but thats not what I'm looking for...someone help me out here, thanks again fellas

its called HB circle. out of 2 HB shotgun formation.

if it's out of shotgun 2RB 3WR its called RB Circles.

both RB (often they use Dual HB) do those circle routes
the Z receiver (#1 receiver) does an in route
the #2 receiver does a hook
and the slot receiver does a streak

as for defending it, 1 thing that works is putting your defensive ends in mid zones, the yellow zones, and you can do that on pretty much any defensive play you want to use. 2 man under works, cover 2 can work. make sure you bring up your corners and safeties. its a quick play and a blitz killer, so get a good zone play that will catch him off guard when he tries to hit the RBs.