"Teekyū" is a fast-paced, absurdist comedy anime centered around the daily lives of four high school girls who are members of their school's tennis club. Despite the club's name, the series rarely focuses on actual tennis, instead emphasizing the chaotic and nonsensical interactions between the characters. The narrative is episodic, with each short episode lasting only a few minutes, packed with rapid-fire dialogue, surreal humor, and exaggerated situations.

The main characters include Kanae Shinjō, the club's president, who is often the most level-headed but still gets swept up in the group's antics; Nasuno Takamiya, a wealthy and eccentric girl who frequently brings bizarre gadgets and ideas to the club; Marimo Bandō, a hyperactive and unpredictable member who often drives the group into absurd scenarios; and Yuri Oshimoto, a quiet and seemingly normal girl who occasionally reveals a surprisingly dark or odd side. The dynamic between the four is the core of the series, with their personalities clashing and complementing each other in ways that fuel the humor.

The plot is largely devoid of a traditional storyline, instead relying on a series of disconnected, comedic vignettes. These range from mundane school activities, such as preparing for a cultural festival or dealing with homework, to completely surreal situations, like encountering aliens or engaging in nonsensical competitions. The humor often derives from the characters' over-the-top reactions, wordplay, and the sheer unpredictability of each scenario. Despite the lack of a cohesive narrative, the series maintains a consistent tone of absurdity and energy throughout its run.

"Teekyū" is characterized by its brevity and relentless pacing, with each episode delivering a concentrated burst of comedy. The series does not aim for deep character development or a structured plot, instead prioritizing quick, laugh-out-loud moments and the chemistry between its central quartet. Its unique approach to comedy and its ability to consistently deliver humor in a short format have made it a distinctive entry in the genre.