Ep 9. Desperately Seeking Brains!

In Sgt. Frog season 1 episode 9, titled "Desperately Seeking Brains!", the platoon are on a mission to steal a top-secret brainwave-controlled weapon from the human world. Sergeant Keroro comes up with a plan to infiltrate the world's fastest computer and locate the weapon's codes. However, his plan is foiled when he's discovered and has to use the help of a female computer programmer to try and complete the mission.

The episode starts with the platoon discovering a weapon from the human world that is controlled by brainwaves and has the power to take on an entire army. Sergeant Keroro devises a plan to steal the weapon's codes from the world's fastest computer, the "Big Brain," by sending Kululu inside in a computer program.

However, the mission doesn't go as planned when Kululu is discovered by the Big Brain's security system and has to fight his way out. As a result, the Big Brain is damaged, causing it to malfunction and go haywire. The platoon is then forced to find another way to obtain the weapon's codes.

Sergeant Keroro comes up with a new plan to seek out a computer programmer who can help them. The platoon tracks down a human female computer programmer named Natsumi and kidnaps her, forcing her to work with them. However, she eventually agrees to help them when she learns the weapon could be used for good.

Together, the platoon and Natsumi create a program that allows Sergeant Keroro to enter the Big Brain undetected and obtain the weapon's codes. After obtaining the codes, the platoon successfully retrieves the weapon and returns it to their base.

Overall, "Desperately Seeking Brains!" is a thrilling and action-packed episode that showcases the platoon's intelligence and resourcefulness in completing their mission. The humor and well-crafted storyline keep viewers engaged and on the edge of their seats, making it a must-see episode for fans of the series.