Olive and Otto face their biggest challenge yet.

When the alarm system at Headquarters is triggered, Olive, Otto, Ms. O, and Oscar must avoid a series of booby traps in order to shut it off. Olive and Otto explain to Ms. O how a case went wrong, each in their own way.

In this half-hour episode, Olive tells the story of what happened to her old partner.

When Olive and Otto get zapped into a comic book, Olive must use her knowledge of the comic book to escape.

In order to save humanity, Olive and Otto must locate a treasure chest that Oscar buried. The agents throw a surprise party for Ms. O.

In this half-hour episode, Olive goes undercover in a high-stakes “Rock, Paper, Scissors” game.

In this half-hour episode, Olive is put on trial for causing oddness.

When several of Oscar’s Oscarbots (robots made in his own image) become lost in town, Olive and Otto must help him find them. Otto and Olive must figure out why people in town are becoming plaid and striped.

Olive and Otto battle Oren and Olaf for the best chairs at Odd Squad while Ms. O and Oscar run a top secret mission. Olive and Otto become concerned when they find out their Odd Squad test is being administered by Agent Obfusco - a mysterious agent who speaks only in word problems.

When the ball pit starts to overflow, Odd Squad must stop headquarters from being destroyed. Two of Ms. O's assistants accidentally find themselves on a mission.

Oscar tells Olive about his early days at Odd Squad. Olive and Otto get trapped inside a board game.

When symmetrical objects become vandalized, Olive and Otto must figure out why. Olive and Otto are called in to help when objects and, eventually, people start disappearing inside an Italian restaurant.

Ms. O and her team will stop at nothing to win their very first Jackie Award. When Ms. O and Oscar accidentally switch bodies, Olive and Otto must set things right before the entire Odd Squad team finds out what happened.

When Ms. O has bizarre side effects after being sprayed by a weird plant, Olive and Otto must travel around town finding the correct measurements of the ingredients for the medicine to cure her, all while keeping Ms. O's condition a secret from her. The only thing that can bring Ms. O’s old partner O’Donahue out of retirement is the very thing that put him there in the first place: a mysterious villain and a case that’s gone unsolved for years.

In this half-hour episode, dinosaurs break out of the dinosaur room in headquarters and Olive and Otto must travel back in time to save the day.

In this half-hour episode, Odd Squad agents compete in Olympic style games to determine who gets to be Ms. O for the day.

In the middle of summer, Olive and Otto must figure out why parts of the town are turning snowy and cold. Olive and Otto interrogate two suspects to figure out which one is innocent and which one is guilty.

When Mayor Macklemore catches a case of the Sing-A-Longs, Olive and Otto must discover the cause before the Mayor sings his way out of his job. When a Ms. O from the past shows up at the office, Otto and Oscar must send her back to the day she came from or risk causing a time catastrophe.

In this half-hour episode, the tube system breaks and Olive and Otto are left stranded in a dangerous forest.

Chaos ensues when one of Oscar’s Oscarbots malfunctions. When Agent Ori’s first day on the job turns into a worst-case scenario, other Odd Squad agents share their own ‘worst first day ever’ stories.

When Olive catches a case of The Skips and goes missing, rookie agent Otto must solve his first case by himself. Otto rushes to finish a case so he can see his favorite magician, The Great Grinaldi, perform.

When Otto accidentally releases 100 small furry creatures in headquarters, he recruits Oscar to help get them back before Ms. O finds out. In a flashback episode, Ms. O tells the story of how she defeated a villain called the Patternista back when she was an agent.

When characters escape their books in the library, Olive and Otto must figure out how and why it’s happening and put a stop to it. When Ms. O’s important briefcase is stolen by a shape shifter, Olive and Otto must get it back.

When a young agent in training gets lost in headquarters, Olive and Otto must find him before Ms. O finds out. Olive and Otto must stop Fladam, a villain with a vendetta against cubes.

Olive and Otto must find a way to stop Obfusco’s plant from taking over headquarters. When Otto gets trapped inside a video game it's up to Olive to rescue him.