Which one?
The first onespoilers:end of spoilers
Barry fought the fighting Rogues, until the Gorilla's came from Gorilla City lead by Grodd by the end of the issue
The second onespoilers:end of spoilers
It showed how Barry met Hal
And they went through an adventure similar to their first one
The thirdspoilers:end of spoilers
20 years in the future Barry kills Grodd (after he was done eating the brain of Eobard Thawne, the brightest scientist from the 25th century), and went back in time to kill his present self