Barry Allen struggles to balance his personal life and his duties as The Flash. Meanwhile, Gorilla Grodd, a hyper-intelligent telepathic ape from Gorilla City, a hidden civilization deep in another country, arrives in Central City with a plan to assert his dominance over humanity. Gifted with immense strength and mind-control abilities, Grodd sees himself as the rightful ruler of the world. s Barry wrestles with the challenges of his double life as both a forensic scientist and the Scarlet Speedster, he must confront an enemy whose intellect and raw power make him one of the most dangerous threats he's ever faced.