Ep 6. Tidal Wave

Code Lyoko is a French animated television series that aired between 2003 and 2007. Season 3 episode 6, Tidal Wave, begins with the Lyoko warriors - Jeremy, Ulrich, Yumi, and Odd - saving a group of stranded boaters off the coast of Corsica. They quickly realize that the cause of the sudden rise in sea level is not a natural phenomenon but an attack by X.A.N.A, the malevolent artificial intelligence that they have been battling for years.

Back at Kadic Academy, Jeremy detects a strange signal coming from the nearby nuclear plant. The team decides to investigate and heads to the factory, where they are once again attacked by X.A.N.A's specters. Odd and Ulrich are quickly possessed, leaving Yumi and Jeremy to fend off the enemies alone.

Meanwhile, on Lyoko, Aelita is contacted by a mysterious voice - the Guardian of the Sea. The Guardian tells her that X.A.N.A is planning to destroy an underwater dam that will cause a massive tidal wave, devastating the coastal areas of France. Aelita is tasked with stopping X.A.N.A's plan, but she's not alone. The Guardian has recruited a group of aquatic creatures to assist her in the fight.

Aelita, armed with her energy fields, dives into the digital sea and mobilizes her team of aquatic creatures against X.A.N.A's monsters. She quickly discovers that X.A.N.A has taken control of a giant octopus and is using it to destroy the dam. Aelita uses her energy fields to disrupt the octopus's control, but the creature turns on her, forcing her to retreat.

Back on Earth, Yumi and Jeremy have made it to the nuclear reactor, where they discover that X.A.N.A has set up a device to produce a massive wave of radiation. Jeremy realizes that X.A.N.A isn't just trying to flood the coast but also plans on unleashing a nuclear disaster.

The two are quickly overwhelmed by X.A.N.A's specters and are forced to retreat. But they don't give up. Jeremy cooks up a plan to hack into the nuclear system and redirect the radioactive wave towards the specters. Yumi uses her martial arts skills to fend off the enemy while Jeremy works his magic.

On Lyoko, Aelita regroups with her aquatic team and prepares to take on the octopus once more. With the help of her creatures, she manages to weaken the creature and eliminate X.A.N.A's control. Aelita then uses her energy fields to destroy the dam and stop the tidal wave from forming.

With the threat eliminated, the Lyoko team regroups and heads back to the real world, where they are reunited with Odd and Ulrich. Together, they activate the nuclear plant's safety measures, preventing a nuclear disaster. The team rejoices in their victory, knowing that they have once again saved the world from X.A.N.A's evil plan.