"Donyatsu" is a short-form anime series set in a post-apocalyptic world where humans have mysteriously vanished, leaving behind anthropomorphic cat-shaped pastries known as Donyatsu. These creatures, resembling various types of bread and desserts, navigate the remnants of human civilization, scavenging for food and resources while grappling with their bizarre existence. The story unfolds in a lighthearted yet surreal manner, blending absurd humor with subtle existential undertones.

The protagonist, Donyatsu, is a cat-shaped doughnut who serves as the central figure in this peculiar world. Alongside him are other Donyatsu characters, each representing different types of pastries, such as croissants, baguettes, and cream puffs. Together, they explore abandoned cities, encounter strange phenomena, and engage in mundane yet oddly philosophical conversations about their purpose and the world they inhabit. The narrative lacks a traditional plot structure, instead presenting a series of episodic vignettes that highlight the quirky interactions and survival strategies of the Donyatsu.

The series maintains a minimalist approach to storytelling, relying heavily on visual gags and the inherent absurdity of its premise. Despite the comedic tone, there are occasional moments of introspection, as the Donyatsu ponder the absence of humans and their own origins. The setting, a desolate urban landscape filled with remnants of human life, serves as a backdrop for their adventures, emphasizing the contrast between the whimsical nature of the characters and the eerie emptiness of their environment.

"Donyatsu" does not delve deeply into character development or complex plotlines, instead focusing on the surreal and humorous aspects of its world. The interactions between the Donyatsu are often playful and nonsensical, reflecting the series' overall tone of lighthearted absurdity. The anime's brevity and episodic format make it a quick, accessible watch, appealing to audiences seeking a unique blend of comedy and surrealism.