Sonic Chic, le retour - La synchronite

Dr. O leads the case of a strange medical emergency that causes chaos at O.S.I. headquarters. Olive and Otto help Mrs. O prepare a banquet for some very important, but easily offended, guests.

Olive and Otto must locate and dig up a treasure that Oscar has buried. The chest contains the key to saving humanity from the dreaded Hydraclops. Plus, it's Mrs. O's birthday and the agents have to decide what gift to give her. The problem is, they can't come to a consensus. So Polly Graphe is asked to help them take a…

When the alarm system is triggered at the headquarters, Olive, Otto, Mrs. O and Oscar must overcome a series of traps to turn it off. Olive and Otto are completely covered in mud and dead leaves. They have some explaining to do... about their appearance and the giant vortex that threatens the city.

A young recruit follows Olive and Otto into the OSI Training Program. When he runs away, Olive and Otto must locate him before Mrs. O finds out. Later, Olive and Otto must stop Aplatem, a villain with a grudge against cubes.

Olive and Otto must solve the case of a group of people who have been turned into puppets. With the help of OSI, Debbie at Home and Douglas Delivery put aside their differences to find out why their food is disappearing.

The dinosaurs escape from the dinosaur room causing panic and destruction throughout the headquarters. Afterwards, Otto and Olive must go back in time to prevent the catastrophe from happening.

Otto starts to shrink. Olive and Ovide go in search of the legendary Growth Potato to cure Otto of the shrinking effect. Afterwards, Mrs. O tells Olive and Otto about the circumstances under which she became a member of OSI.

Olive tells Otto the story of her former teammate.

A criminal uses one of Oscar's gadgets to wreak havoc on the city, resulting in Olive's expulsion from OSI. Later, Polly Graphe inexplicably closes her lemonade stand. Olive and Otto are called in to help.

After overfeeding the Obscuro agent plant, Olive and Otto must find a way to stop its growth before it invades the headquarters. Also, Otto is stuck in a video game. Olive must find a way to get him out of it.

OSI agents participate in the Unusual Games, an unusual version of the Olympics, to determine who will take Mrs. O's place for the day.

Otto and Oscar must compete to see who will be elected Captain Friendly. Afterwards, teammates Ollie and Otto are separated to find the Sploutchs!

Olive and Otto are left to their fate in a dangerous forest due to a broken tube system.

Otto and Oscar try to prevent Olive from turning into a pirate. However, Oscar accidentally turns into a sofa.