La cerise-sur-le-sundae-nateur - Monsieur

The agents must solve a difficult case and use a data table. Meanwhile, Oscar meets with candidates to find a new head of the creature room.

Olympia, Otis, Oscar and Oona are accidentally transported to the future and must find out what day they've stumbled on by discussing the months and seasons. Otis then uses a number line to count backwards.

Various objects in the town are covered in jam. Olympia and Otis ask Justin Solite for help and use equations containing symbols. At the restaurant, the waiters have to measure the length of Olympia's gadgets.

Agents secretly help Olympia and Otis using symmetry. An unlucky coin ends up in the hands of the public, and Olympia and Otis must retrieve it before disaster strikes.

Oscar attends a gathering of scientists who use addition to create new gadgets. Oona compares and decomposes natural numbers to find the best gadget.

A new room is made available and Olympia has to divide it equally. Otis determines the value of the change to pay for the bus fare and counts it out in groups of ten to pay a restaurant bill.

Transformed into puppies, the agents must give directions to Ohlm to find the person responsible for this misfortune. Doctor O's colleagues measure the length of ingredients needed to make an antidote.

A group of villains can't agree on a plan of attack and use a bag graph to do so. A creature is loose on the headquarters premises. The agents use geometric shapes to track the creature's movements.

Otis must find special gifts for Olympia based on days, weeks, months and a year. The agents try to determine which type of creature will hatch from an egg based on its attributes.

Agents use coordinates on a map to solve a problem. Otis and Olympia use a scale to compare the weight of various objects.

Otis and Olympia find similarities between people affected by a virus. The agents compete for the title of Agent of the Month, and Otis uses a numerical ruler.

Mrs. O is evacuated from her office. The repairwoman uses solids to make the repairs. The agents help Mrs. O find Orlando, her former teammate, using multiplication.

To get out of a time loop, the agents have to add up to the number 50. Olympia and Otis use a number line to find an evil-doer.

Otis and Olympia become maintenance workers, adding and multiplying to solve problems. IT agents use a ruler to measure objects.

Mrs. O finds herself trapped in a mirror. The agents use a data table to help her. The agents try to resolve a disagreement between Madame O and Oksana and make an estimate with a numerical line.