Ep 13. Revenge of the Planetary Instructor CAO-2

The episode Revenge of the Planetary Instructor CAO-2 is the thirteenth episode of the fourth season of the Japanese anime Urusei Yatsura. The show revolves around the misadventures of Ataru Moroboshi, a high school student who becomes the target of an alien race called the Oni after he fails to answer a question correctly in a game of tag. The Oni decide to conquer Earth, but their plans are constantly disrupted by Ataru and his friends.

In this episode, the viewer is introduced to CAO-2, a planetary instructor from planet Schachen. She is a highly-skilled teacher who has been sent to Earth to evaluate and improve the academic progress of the planet's inhabitants. Upon her arrival, she is greeted by Lum, a beautiful alien girl who is in love with Ataru.

As CAO-2 begins her mission, she quickly realizes that the Earth is filled with lazy and unmotivated students who have no interest in studying. She also discovers that Lum's influence on Ataru is one of the main reasons for his academic struggles. CAO-2 decides that she must take drastic measures to improve Ataru's grades and sets out to create a series of challenges and tests for him to complete.

Ataru, who is naturally lazy and uninterested in school, is initially resistant to CAO-2's efforts. However, when he realizes that his poor grades will prevent him from graduating high school, he agrees to take on the challenge. CAO-2's tests prove to be extremely difficult, but Ataru's determination and stubbornness allow him to complete them with relative ease.

As Ataru's grades begin to improve, CAO-2 becomes increasingly impressed with his progress. However, she also begins to develop feelings for him, which complicates her mission. Meanwhile, Lum becomes increasingly jealous of CAO-2's closeness to Ataru and begins to sabotage her efforts.

The episode is filled with humor and quirky characters, and it highlights the importance of education and hard work. The viewer is taken on a wild ride as Ataru navigates his way through CAO-2's challenges, and Lum tries to win back his affection.

Overall, Revenge of the Planetary Instructor CAO-2 is an entertaining and engaging episode of Urusei Yatsura that will keep viewers on the edge of their seats. The show's unique blend of sci-fi, comedy, and romance make it a must-watch for fans of the genre.