Ep 17. Attack from Space: Satellite Cannon.

In Yu-Gi-Oh Duel Monsters season 3 episode 17, titled Attack from Space: Satellite Cannon, the gang finds themselves facing a new challenge as they prepare for the Battle City finals. Seto Kaiba, the ruthless billionaire and CEO of KaibaCorp, has created a powerful new card that he plans to use to defeat his opponents and claim the title as the best duelist in the world. However, his plans are disrupted when an unknown force attacks the city from space.

As the mysterious invaders approach, Seto Kaiba activates his new card, the Satellite Cannon, and uses its incredible power to destroy the alien ships. But as the smoke clears, it becomes apparent that the attack was not of extraterrestrial origin, but rather a ploy by Kaiba's longtime rival, Maximillion Pegasus. Pegasus had been seeking revenge against Kaiba for years, and with the help of his own tech company, Industrial Illusions, he was able to create the illusion of an alien invasion.

With Kaiba's ego bruised and his reputation tarnished, Pegasus pleads with him to use his wealth and influence to help him find a cure for a mysterious disease that has been affecting children around the world. Kaiba, still reeling from the shock of the attack, reluctantly agrees, and the two set off on a journey to find a cure.

Meanwhile, Yugi and his friends are left to prepare for the Battle City finals without the help of Kaiba and his powerful corporation. With Seto's absence, other powerful players such as Marik, the leader of the Rare Hunters, and Joey Wheeler, Yugi's childhood friend and rival, begin to rise to the top.

As tensions between the duelist factions reach a boiling point, Yugi must summon all of his strength and skill to face his opponents and come out on top in the epic Battle City finals. With new cards, new challenges, and new enemies waiting around every corner, Yugi and his friends must use every trick in the book to emerge victorious and become the best duelists in the world.

With stunning animation, complex characters, and thrilling duels, Yu-Gi-Oh Duel Monsters season 3 episode 17, Attack from Space: Satellite Cannon, is a must-watch for fans of the series. Whether you're a longtime fan or a newcomer to the world of Yu-Gi-Oh, this episode is sure to keep you on the edge of your seat and leave you eager to see what happens next. Don't miss out on this exciting and action-packed installment of one of the most beloved anime series of all time.