Team Flash is going on an inter-dimensional road trip to Gorilla City. In "Untouchable," the latest episode of "The Flash," Jesse Quick returned to Earth-1 and told Wally that Gorilla Grodd had taken her father, Earth-2's Harrison Wells, to Gorilla City.

When the "The Flash" returns on February 21 after a one-week break, Barry, Cisco, Caitlin and Julian will travel to Earth-2 to recover Harrison Wells. A promo for the first part of the two-episode event, titled "Attack on Gorilla City," boasts the clever tag line "One Nation Under Grodd."

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If Gorilla City sounds familiar, that’s because it was introduced in Season 2. When Grodd attacked Central City (again), Team Flash disposed of him by sending him to Earth-2. That is to say, Cisco vibed him right into Gorilla City, a settlement filled with sentient gorillas.

In the comics, Gorilla City is run by an intelligent gorilla named Solovar, until he was challenged for leadership by Grodd. Voiced by "Community's" Keith David, Solovar will appear in this upcoming Gorilla City event.

RELATED: DC Comics Solovar Arrives in Flash's Two-Part Gorilla City Story

According to the episode synopsis,

BARRY AND TEAM TRAVEL TO GORILLA CITY AND FACE GRODD – When Jesse Quick (guest star Violett Beane) informs the team that her father (Tom Cavanagh) has been abducted, Barry (Grant Gustin), Caitlin (Danielle Panabaker), Cisco (Carlos Valdes) and Julian (Tom Felton) voyage to Earth-2 on a rescue mission to save Harry from Gorilla City. As they trek through the forest, Barry and the team are immediately captured and brought to Grodd (voiced by David Sobolov). Grodd tells them he needs their help to stop Solovar (voiced by Keith David), the leader of Gorilla City, as Solovar wants to invade Earth-1. Meanwhile, back on Earth-1, Jesse and Kid Flash (Keiynan Lonsdale) hit the streets to stop a metahuman that can control gravity, with H.R. and Joe (Jesse L. Martin) guiding them from S.T.A.R Labs. Dermott Downs directed the episode with story by Andrew Kreisberg and teleplay by Aaron Helbing & David Kob. Original airdate 2/21/2017.

This two-episode event kicks off on February 21 at 8PM on The CW.