The Ross kids become concerned that history is repeating itself after a scary old doorman tells them a building legend about a nanny who did “something terrible” to the kids in her care on Halloween. Meanwhile, Jessie and Tony work together to crash an exclusive Halloween party so Jessie can give her short story to a famous magazine editor.

It's the first day of the new school year. Luke brings Kenny the Koala to school, but it falls out of his backpack. Ravi tries to cover for Luke and says that it's his, causing him to be made fun of. Meanwhile, it's Emma's first day of high school and she meets an interesting new friend, Rosie.

Ravi is having trouble finding a home for all 12 of Mr. Kipling's baby lizards.

Christina is having a fashion show and is worried that the owner of a fashion blog, Tippi Trashbot, will give her show a bad review.

It’s a big night for Jessie and the kids when Emma manages to steal Austin Moon’s shoe during his performance at Times Square on New Year’s Eve and Bertram manages to lose Zuri in the massive crowd. Jessie seizes the opportunity to show Austin and Ally some of the songs she has written. The Austin & Jessie & Ally All Star New Year crossover starts on Austin & Ally S02E06 Big Dreams & Big Apples (I).

Jessie and the Ross kids meet Tony's family.

Jessie offers to introduce the kids to NBA All-Star Chris Bosh, who's in town to play one of Luke's favorite local basketball teams at the park.

Zuri is having problems with a teacher at school, so Jessie volunteers in her classroom so she can assess the situation.

Jessie gets her big break as a stunt double to popular Australian actress Shaylee Michaels and the two become fast friends. But chaos ensues when the movie’s director and Shaylee’s boyfriend, MCD , asks Jessie out on a date. Meanwhile, Emma helps sneak Zuri’s pet zebra into the penthouse.

Luke breaks his leg in a dancing accident at the school carnival. Since he is wheelchair-ridden, he stays on the terrace of the penthouse and notices a suspicious figure dressed in black at the carnival. He enlists Emma's help to find out who the shadowy figure is, and it is revealed to be Bertram.

Zuri must get back a cherished toy that Jessie passed on to her after she trades it to a toy collector. Luke and Emma prepare Bertram for a Salsa dancing contest to win his crush's heart.

Jessie and the Ross kids meet Tony's family.

Emma gets upset when her friends gravitate to the new girl in school; Ravi helps Luke with a project about India.

After Jessie and Ravi discover that Zuri is a chess prodigy, Jessie enters Zuri into a chess competition where she can win two tickets for a trip to Paris. Meanwhile, while watching a show about unsolved crimes, Luke and Emma start to believe that Bertram is the "Scuba Bandit" and try to prove this – however, Bertram finds out and forces them to be his crime assistants.In the end, Zuri throws the match so that her opponent can go home to Paris to see his family and make amends, and Luke and Emma discover that Bertram isn't really the Scuba Bandit – he was just pretending to get back at them for believing that he was, but when they're watching the show again, they start to believe that Jessie is the Sweetheart Thief as the episode ends.

At a slumber party, Luke calls Jessie to pick him up because he misses Kenny, With Jessie's guidance Luke decides that it’s time to give up Kenny his stuffed koala, so he tries to spend one night without Kenny and gives him to Jessie to take care of. He was probably able to make it but when Jessie tried to give it back to Luke she ended up dropping him into traffic therefore cutting his arm and head off off but Stewart thinks he can fix Kenny by performing emergency surgery.

Luke, Ravi, Zuri, and Stewart get locked in the penthouse panic room.

Future Jessie appears from a time machine to warn present Jessie that Ravi will cause a threat to her future life.

Jessie post a secret and Zuri reads it and thinks that Jessie is an alien, but Zuri tries to make Jessie to think that she's and alien too.

Tony and Jessie attempt to make each other jealous by asking their exes on a double-date, causing the duo to break their dating relationships, which also saddens Emma & Zuri in the process. Meanwhile, Luke & Ravi attempt to sabotage each others' plans on how to relieve Bertram's stress level. Unfortunately, this leads Bertram into thinking that the Ross brothers don't actually care about him. Also, he's hypnotized into thinking that he's a stray tomcat.

When Jessie's dad invites her out to the military camp to visit, Jessie and the kids embark on what should be a pleasant vacation, however when they arrive Jessie is shocked by some news her dad reveals. Not only that Jessie also meets her long time rival Darla again whose younger brother Caleb takes a shine to Emma. Emma and Caleb try to make their relationship work while Jessie and Darla do everything they can to try and break them apart.

Jessie is excited when she and the Ross kids are invited to participate in a reality show.

When Teddy Duncan (Bridgit Mendler) gets accepted into a college in New York City, she goes to New York, alongside her brother P.J. (Jason Dolley), and meets up with Jessie. When a blizzard traps P.J and Teddy in New York City, Jessie and the Ross kids try to get them back to Denver the rest of the Duncan family go and get them as well. Meanwhile in Colorado, Gabe (Bradley Steven Perry) is being a scrooge.

Jessie enrolls Luke in a dance class.

Jessie hooks Zuri up with a new girl named Wendy McMillan after seeing a director to get her acting career started. With Jessie she's an angel, but while Bertram is in charge, she tears up the place and wrecks everything. Bertram tries to take care of it, but Wendy hooks Bertram up too. Zuri tells Jessie she's a monster and wants to stop playing with her. Meanwhile, Emma goes over her limit on her cell phone bill, so Jessie forces her to get a job so she can pay the bill herself.

Jessie and Zuri set out to host a birthday party for Taylor, a new friend who’s sorely missing her mother, a deployed member of the military. When Taylor decides she’d rather not celebrate anything without her mother, Zuri enlists the help of Mrs. Obama.