A girls night out is going to happen in the next episode of "Arrow" Season 5. In addition to that, the official plot description of episode 15 "Fighting Fire with Fire" is here.

According to Inverse, China White, Cupid, and Liza Warner escaped and the party is on, all of the girls are vowed to have their revenge in the next episode of "Arrow" Season 5. Capturing the villains would not have been causing so much problem if Oliver is not so caught up with some media and other activities. Instead, Oli is spending also much time in outrunning the police department, proving his loyalty to the public.

As for the official plot synopsis of episode 15, Comic Book Movie notes,"Oliver (Stephen Amell) faces his biggest challenge yet as mayor. Felicity (Emily Bett Rickards) continues down her dark path with Helix. After Vigilante attacks Oliver while he's acting as the mayor, Diggle (David Ramsey) leads the team in a mission to stop Vigilante once and for all.

Newly appointed Mayor Oliver Queen finds himself challenged as he fights on two fronts for the future of Star City. With Diggle back in the military and Thea adamant about hanging up her hood as Speedy, Team Green Arrow is down to just Oliver and Felicity - but they're no longer the only vigilantes in town. Green Arrow's public defeat of Damien Darhk at the end of Season Four has inspired a new crop of masked heroes to step up and defend the city, though their painful inexperience makes them obstacles, rather than allies, in the field. The arrival of a deadly new adversary will force Oliver to confront questions about his own legacy, both as mayor and as the Green Arrow."

"Arrow" Season 5 episode 15 is titled as "Fighting Fire with Fire". The upcoming episode is scheduled to premiere on Wednesday, March 1, 2017 at 8:00 p.m. first and exclusive on The CW.