Jim sends a detachment of sardines out to retrieve the day's newspaper. But radio contact suddenly goes silent, making everyone fear the worst. Jim takes Bianca and sets off on a rescue mission...

Jim finds himself in hot water when harassed by a sea urchin. Cyril suggests a civilized discussion; Bianca wants to get physical. Neither method works. Jim must find his own solution to get himself out of this situation.

Fed up with plankton, the crew is on edge. Cyril suggests a bold plan to get the red sauce humans use to flavor food. Jim eagerly agrees without thinking it through. Their supermarket mission quickly spirals out of control.

Water consumption in the submarine restrooms is too high. Jim introduces water-saving measures with the help of his eco-minded crew. But with good intentions clashing with urgent needs, how will it all play out?

Jim finds out that the sardines have parties, and it looks like he is somehow not on the list. He tries to not take it personally, but it's hard to be both a captain and a friend...

Jim thinks Bianca is great with Roy, but she slacks off and spends time making valuable pompons. When Roy is kidnapped, Bianca must pay the ransom with her precious pompoms before Jim finds out!

Jim and Bianca are convinced they're the best ping-pong players on the sub and organize a tournament. But despite practicing every day, they come dead last. What's the deal?! And what can they do to win?

The sardines are tired of the same old plankton food. Jim needs to tell Fabienne, the head chef, to change the menu. The problem? She only talks to adults. With Bianca and Cyril's help, Jim tries to act more grown-up.

Jim brings Bianca, the 'human expert,' on a mission to collect onions. But when they meet a girl in the onion garden, Jim realizes Bianca might not be the expert she claims to be...

Jim wants a Captain's Portrait, and has Cyril commission three from the crew: one depicts him like a king, one as Bianca, and one like a wizard. He "tries on" each personality, but ends up plunging the sub into chaos.

The sub is immobilized by a wheel clamp, and Bianca is convinced Orca World's marine biologists have tracked her down. Jim swears to protect his pal and makes everyone go incognito in solidarity!

Cyril teaches a week-long seminar about humans leading up to an exam. For once, Jim is just a regular student and spends the week having fun with Bianca. But he soon realizes he's not as much of a human expert as he thought.

The crew is completely worn out, so Jim decides to take them camping. But he struggles to give up his captain privileges. Just as he starts to relax, it's already time to leave. Jim will do anything to delay their departure.

The tranquility of the submarine is troubled by the USS Mean Shark, another submarine on wheels crewed by mean sharks. The pirate sub keeps appearing on sonar again and again. But what is really behind this sinister ship?

Jim and Bianca set off on an improvised camping trip in the desert. With no real plan for water, Cyril secretly tags along to keep an eye on them - but how long can he stay hidden in the shadows?

Jim gets behind the wheel to confront a road hog. But as things escalate, it's getting harder for him to stay calm in front of his crew. How will the captain defuse the situation?

Jim discovers the "old fortune teller" guiding his decisions is actually Cyril in disguise. Without this crutch, Jim must learn to trust himself when a crisis hits the submarine!!

Overwhelmed by complaints and a messy sub, Jim gets a robot cleaner. Everyone's thrilled, except Bianca, who suspects trouble. When limpets go missing, Jim starts to doubt his ScubaScooper too.

A distressed sardine rushes to Jim - his pompon has been stolen! As Cyril opens a case, Jim confesses to Bianca: he's the one who accidentally took Julian's pompom. Together, they embark on a mission to track it down.

The submarine has been driving backward for weeks, and Cyril demands Jim fire Yannick, the well-meaning but terrible pilot. But Yannick's charm makes the task nearly impossible, leaving Jim to wrestle with his own indecision.

Bianca and Jim smuggle goods onto the sub, but when Cyril discovers their side hustle and opens a jar of pickles, it contaminates the ship's ecosystem. Their only hope: "Operation Lollipop" to seal that jar!

Jim vanishes for an epic ping pong match with Bianca, only to return and find his crew barely noticed he was gone. If they don't need their captain, what's left for Jim to do?

Jim gets sick, and the crew realizes that no one knows who should be next in command: Cyril or Bianca?! While they try and figure it out, both are named "co-captain". But sharing control soon becomes extremely difficult.

Jim sees a Crunchyfish commercial featuring a talking breaded fish. When he realises the fish is just a human being wearing a costume, he's convinced that everyone's a fibber.

Cyril is upset that he doesn't know the ending of the rom com he was watching. Jim and Bianca find a human to tell them the ending, but they lose him in the sub.

Jim wants in on the fun when the Urchins pick their representative. He tries to win by being Captain Nice, but soon the Urchins start taking advantage of him.