Harley Quinn Season 4 Episode 7 Most Culturally Impactful Film Franchise Episode Title: Most Culturally Impactful Film Franchise Episode Description: After investigating the Joker's whereabouts on the night of Nigtwing's murder, Batgirl finds a footage that proves he is lying about being the killer, and exposes him. Meanwhile, Harley tries to talk to Ivy about her mental problems, but she is busy with stealing a time machine. Frustrated, Harley uses the time machine so they can visit their future selves, only to arrive to an apocalyptic Gotham in the year of 2048. A group of resistant find them and explain that a mysterious force caused Gotham's destruction in 2023, killing many residents including Harley and Ivy, and led the adult Robin to took control of the city. The leader of the resistence is Harley and Ivy's future daughter Neytiri, who is secretly helping Robin to collect and freeze the remaining residents, and sells Harley and Ivy out. She reveals that they were bad parents and a bad couple too due to their lack of communication, making Harley and Ivy revaluate their relationship. One of King Shark's adult children helps them escape and urges them to change this future before sending them back to their time. However, they arrive to six days later, where the apocalypse in Gotham has already started.