Le retour de l'Hydraclope - Le cas d'O

Olive and Otto must stop the zeroes from disappearing before the missing zeroes destroy the town... and Otto turns into a baby. Plus, strange things are happening on the Bears' basketball team, so Olive and Otto have to get things right before the big game. Is the number thirteen unlucky?

Olive and Otto must find out why and how many things are disappearing around town. But all Otto wants to do is listen to a song by his favorite band, Sonic Chic. Later, Debbie, from Debbie's Pizzeria, has split into two... not once, but twice... making 'four Debbies'! When one of the four Debbies goes missing, Olive and…

Olive and Otto are dispatched to the Shape Manor to investigate a strange crime and even stranger people. Who are the culprits behind the cake theft?

In this Christmas-themed episode, Olive and Otto help Santa find his accidentally shrunken reindeer. Plus, Oscar must help Mrs. O do more good deeds than bad to get her name off Santa's naughty list.

Olive and Otto must understand why symmetrical objects are being transformed. In addition, Olive and Otto come to the rescue of the owners of an Italian restaurant as objects, and subsequently people, disappear in their establishment.

When a splutch escapes from the headquarters of the Super Unusual Organization, Olive and Otto must compete with other agents to catch it first. Afterwards, the people of the city are no longer able to count. Olive and Otto must find out who is causing the problem and why.

Several of Oscar's Oscarobots (robots made in his image) are lost in the city, and Olive and Otto must help him find them. In addition, Otto and Olive must find out why the city's inhabitants are becoming tiled and lined.

Mayor Aimee Tropole is stricken with acute songitis; Olive and Otto must find out why before the mayor loses his job. Then, when a Mrs. O. from the past arrives at the office, Otto and Oscar must send her back to the day she came from in order to avoid a time-disaster.

Olive has caught the bouncers and disappears; therefore, Agent Apprentice Otto will have to solve a case by himself for the first time. Otto rushes to finish a case in order to go see the show of his favorite magician, the Great Grinaldi.

At headquarters, Otto accidentally sets 100 small furry creatures loose. He has to get Oscar to capture them before Mrs. O realizes it. In addition, Mrs. O recalls an episode from the past and tells us how she managed to defeat a villain when she was an agent.

Characters are escaping from the library books so Olive and Otto must figure out the how, the why and put a stop to it. Later, Mrs. O has an important briefcase stolen by a Metaform, and Olive and Otto must recover it.

Agents Odin and Orelie have been promoted to another O.S.I. office! More importantly, their incredibly sophisticated and super comfortable office chairs are now available. Olive, Otto, Ovid, and Olaf go to Mrs. O to settle the dispute; who should get the chairs? Olive and Otto become concerned when they learn that the examiner for…

O'Brian is offended and prevents Olive from using the tubes. Olive must solve the mystery and find out what she did to upset him. Also, Olive tells Otto what happened to Octavia's partner, Agent Oz.

Mrs. O and her team will stop at nothing to win their first-ever Jackie Trophy. Plus, when Mrs. O and Oscar accidentally switch bodies, Olive and Otto must set things right before the entire O.S.I. team finds out what happened.

Mrs. O has been sprayed with a strange plant, which causes bizarre side effects. Olive and Otto must scour the city to find the right amount of ingredients to make the medicine that can cure her. All the while making sure Mrs. O doesn't find out what happened to her. Later, the only thing that could bring Orlando, Mrs. O's…