"Teekyū" is a fast-paced, absurdist comedy anime centered around the chaotic and nonsensical adventures of the girls' tennis club at Nasumatsuri High School. The series lacks a conventional plot, instead presenting a series of rapid-fire, surreal vignettes that focus on the bizarre interactions and antics of its main characters. The club members include Kaminari Marimo, the hyperactive and eccentric club captain; Nasuno Takamiya, a wealthy and aloof girl with a penchant for luxury; Yuri Oshimoto, a shy and reserved member who often finds herself caught in the chaos; and Kanae Shinjou, a stoic and deadpan character who occasionally reveals a more playful side. Despite the club's name, the girls rarely engage in actual tennis, instead devoting their time to absurd conversations, random activities, and unpredictable situations that defy logic and coherence.

The humor in "Teekyū" derives from its breakneck pacing, exaggerated character traits, and relentless absurdity. Episodes are extremely short, typically lasting only a few minutes, and are packed with rapid dialogue, visual gags, and meta-references to pop culture and anime tropes. The series frequently breaks the fourth wall, with characters acknowledging their existence within an anime and commenting on the nature of their show. This self-awareness adds to the chaotic and unpredictable tone of the series.

Throughout its multiple seasons, "Teekyū" introduces additional characters, such as the mischievous and unpredictable transfer student Baako and the stoic yet oddly endearing robot maid, but the core dynamic remains focused on the original four club members. The lack of a continuous narrative or overarching plot allows the series to maintain its focus on humor and randomness, with each episode functioning as a standalone comedic experience. The anime's unconventional structure and relentless energy make it a unique entry in the comedy genre, appealing to viewers who enjoy fast-paced, absurd humor and unconventional storytelling.