Aquaman/Green Arrow - Deep Target

"When the mysterious organization known as Scorpio uses a cosmic treadmill to try and capture a dinosaur from the prehistoric era, they unknowingly wreak havoc in our universe. Up is down, black is white, and everything we once knew is now the unknown. In this timeline Green Arrow sneaks into Atlantis and finds Aquaman sitting on the throne. The only problem is Aquaman is now Oliver Queen--and Green Arrow is now Arthur Curry. Both heroes will have to work together to see if they can reclaim their old lives--if they even still exist"--