Milly, stung by Sissi’s cruel taunts – the school’s reigning queen of disdain who often belittled her for being so young – sought solace in the familiar embrace of her teddy bear. It was the only confidant she trusted, the sole source of co…

Odd resolved to form a band with his friends. However, Jeremy’s lack of musical talent necessitated a search for a drummer. Their efforts culminated in the recruitment of Nicholas, Sissi’s familiar companion with blond hair. The group found…

On campus, Ulrich and Jeremy were applying graffiti to a wall as Kiwi roused Jim from sleep. As Jim walked past them, Ulrich slipped away unnoticed, but Jeremy remained, incurring consequences that would require him to spend the vacation pe…

Sissi discovered something deeply personal to Ulrich: his diary. Alarming to find, the pages contained details about X.A.N.A. and Lyoko. Seeing an opportunity, Sissi resolved to leverage this knowledge for her own gain, hoping to draw close…

The morning begins with two girls discussing Ulrich, when Sissi appears and declares that he is concealing his feelings for her. Shortly after, Odd and Ulrich orchestrate a prank on Sissi, sending her a text message about "true love." As th…

Jeremie, immersed in the materialization program, achieves a breakthrough. He intends to bring Aelita into being, but understands that careful preparation is required. That night, Xana, wielding control over two bulldozers, initiates the de…

The episode opens with Yumi and Aelita racing through the digital landscape of Lyoko, searching for the activated tower. Abruptly, Yumi vanishes. Moments later, she emerges from Lyoko, appearing unharmed, though visibly drained. Her composu…

The arrival of a film director in town coincides with XANA's manipulation of a plastic alien replica. Through this conduit, XANA plots to harm Ulrich and his companions.

The cacophony of ringing cell phones in class ignited Sissy's fervent campaign to retain her device, but the situation spiraled out of control when Odd pilfered the school office locker, intending to retrieve phones for himself, Ulrich, and…

Jeremie finds himself inexplicably cut off from Aelita. On the very same day, a new student named Taelia arrives at school, bearing a striking resemblance to her. Jeremie becomes convinced that Taelia is Aelita, somehow brought back into th…

Jeremie discovers a crucial test awaits him. Success will secure his transfer to a new school, the key to finally halting XANA's advance. Meanwhile, XANA exerts its influence over a swarm of rats, who descend upon the school, creating chaos…

A cryptic missive, slipped beneath Ulrich's door one night, has him consumed by thought—a love letter bearing Yumi's signature. Simultaneously, XANA unleashes a terrifying assault, corrupting a hive of bees to attack our heroes. Ulrich grap…

The episode opens with Jeremie continuing his efforts to materialize Aelita. He summons the team to the factory, eager to display his latest achievement: a strand of her hair he’s managed to solidify within a test tube. Unbeknownst to him, …

The anniversary of Jeremie and the others’ first encounter with Aelita arrived, and preparations for a surprise began, unbeknownst to them, under the watchful eye of Sissi. As Jeremie and Odd attempted to access the lab elevator, it stubbor…

Following their unsettling encounter with laughing gas during a Science lesson, Team Lyoko finds themselves facing the substance once more, this time as a weapon wielded by Xana. While assisting Sissy with a school production of *Romeo and …

Following a brief game of soccer, Yumi returned home for the night, while Odd and Ulrich proceeded to dinner, finding Jeremie already waiting. He decided to check on Aelita, and Yumi followed him. But as they indulged in the desserts left b…

As Ulrich learns about NanoDoctors, microscopic robots intended to combat illness, he holds a vial containing the gel in which they reside. Od, with malicious intent, tricks him and forces the gel onto his face. Moments later, Ulrich collap…

The unsettling thrum of a new rock song, "Odd," plunges him into a coma. Soon, the same melody permeates the school, a sinister pulse emanating from XANA’s latest creation – a beat he can broadcast across any distance. The hospital overflow…

Jeremie’s “Materalize Aelita!” project has now reached unprecedented heights—quite literally. He attempts to virtualize himself, but the system lacks the necessary memory to complete the transfer, leaving him stranded between realities. The…

Herb and Jeremy competed in a robot competition; Herb piloting "Iron Sissy" and Jeremy commanding "Kiwi 2." In a blatant act of cheating, Herb launched a gear from Sissy, aiming to disable Kiwi 2. Simultaneously, Xana was enacting her lates…

Xana plotted to eliminate everyone using her control over gravity. Yumi, Odd, and Jeremy headed for the factory, but Ulrich was occupied with a soccer match. His father, a man who believed strongly in first place, was in attendance. However…

Ulrich was weary of the repeated resets, the endless waiting to discern whether Yumi harbored any affection for him. He considered these his sole concerns, yet he failed to account for two impending threats: the recurrence of Sissy's interf…

Yumi proposed a party at her home, prompting Odd to declare the Deejay situation resolved – Sissy's music would not be played. However, inexplicably, Jeremy found himself unable to connect with Lyoko. Later, Odd and Ulrich engaged in a slid…

One afternoon at school, Jeremy observes that Odd, Ulrich, and Yumi are absent. Yet, they are present with him, within the very halls of the school. A perplexing situation unfolds. It becomes clear that XANA, manifesting as Jeremy, has ensn…

While Jeremy fine-tunes the program to bring Aelita to life, Yumi, Ulrich, and Odd prepare for her arrival. Yet, as success nears, Jim’s paranoia exacerbates the already dire circumstances unleashed by XANA. Compelled by his injured ankl…

Aelita has manifested, though a complication remains: Xana has embedded a virus within her. Should Xana perish, Aelita will be consumed as well. Driven by this, Xana launches an assault on Earth, unleashing his own monstrous creations. Ulri…