Stephanie is the former love interest Of Griffin Keyes in Zookeeper, and serves as the secondary antagonist. She play by Leslie Bibb who play another character in another movie, but same name who's nice, but had a kid.
A zookeeper named Griffin Keyes (Kevin James) sets up a plan to propose to the love of his life Stephanie (Leslie Bibb), but she rejects him and claims that his career as a zookeeper is what is keeping her away, therefore breaking Griffin's heart.
Five years later, Griffin is shown to be the lead zookeeper at the Franklin Park Zoo who cares deeply for the zoo animals. That night, Griffin holds a party at the zoo for his brother Dave (Nat Faxon) who is getting married, but freaks out when he discovers that Stephanie was invited.
Dave offers Griffin to come and work with him at a car dealership, explaining that it is the best way to get Stephanie back. Griffin contemplates quitting his job at the zoo and joining his brother at the dealership.
Later, the animals hold a meeting saying that they think Griffin is the best zookeeper at the zoo and don't want him to leave, so they decide to find some way to help him win Stephanie's heart.
Jerome the Bear (Jon Favreau) suggests that they teach Griffin their animal mating techniques, but Joe the Lion (Sylvester Stallone) protests, reminding them that it's against the animal code to talk to humans.
Donald the Monkey (Adam Sandler) says that Stephanie will be at the zoo tomorrow, and all the animals have to do is make Griffin look like a hero in front of her.
The next day, Donald unlocks the door to the lion enclosure and lets Joe out, who confronts Stephanie and Dave's fiancee Robin (Steffiana de la Cruz).
Kate (Rosario Dawson), the zoo's vet, manages to get them away from Joe, but Griffin fails to jump into the lion enclosure, ruining the animals' plan.
When he climbs out of the enclosure, Joe yells at Griffin, causing Griffin to believe he has gone mad.
The next night, all the animals break their code of silence and tell Griffin that they will teach him what to do to win Stephanie. Griffin learns their different mating rituals, but ends up humiliating himself in front of the other zookeepers and the guests.
Griffin then has a talk with Bernie (Nick Nolte), a forlorn gorilla who was moved into a deep enclosure after allegedly attacking a zookeeper named Shane (Donnie Wahlberg).
Bernie explains to Griffin that Shane abuses the animals and he fell when he was abusing Bernie. He lied and said that Bernie attacked him, causing Bernie to lose his trust in humans.
Griffin discovers that Stephanie is dating her other ex-boyfriend, a bullying alpha-male named Gale (Joe Rogan).
Joe's mate Janet (Cher) tells Griffin that the best way to attract a female is to be seen with another female, so Griffin asks Kate to go with him to Dave and Robin's wedding.
Griffin then takes Bernie to T.G.I. Friday's and they bond, with Bernie telling Griffin that he's his best friend.
Griffin and Kate go to the wedding and seem to have fun together. Griffin becomes brave enough to stand up to Gale and this grabs Stephanie's attention. After Kate tells Griffin she had a great time with him, Stephanie asks Griffin out to dinner.
Griffin accepts and they go to dinner and then go to a fashion show. Stephanie tells Griffin that his job at the zoo is holding him back, so Griffin decides to quit his job and accepts Dave's offer which upsets Kate.
Bernie also becomes upset and tells Griffin that he thought he could trust someone again, but was proved wrong when Griffin quit his job. Kate decides to leave the zoo and accepts a job in Nairobi.
Griffin becomes the best employee at the car dealership, but misses working at the zoo. Stephanie proposes to Griffin, but Griffin refuses and dumps her which she wasn't seen again.