Complete story — includes the ending
Ivy begins to investigate "Project M," which is being conducted at Wayne Enterprises and involves the experimentation on and deaths of several plants, much to her anger. After she murders a Wayne Enterprises employee, a horrified Selina abandons her. Ivy then visits Bruce and poisons him, causing him to hallucinate his closest friends and allies along with a mysterious cloaked figure. Simultaneously, Ivy hypnotizes Lucius and forces him to take her to the laboratory where Project M is being conducted. She collects a sample of the Lazarus water that is being used in the experiments before escaping. Gordon tracks them down and rescues Lucius before collecting the antidote and rescuing Bruce, who believes that he has seen his future. Ivy also uses the Lazarus water to create a new flower that can immediately kill someone upon contact with the petals. Meanwhile, Jerome pesters Oswald in Arkham and subjects him to numerous humiliating tasks to turn him insane. Upon learning that Jerome intends to escape and wreak havoc on Gotham, Oswald decides to use that to escape.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Gotham season 4. HTML formatting and reference markers removed. · Content license