"Katte ni Shirokuma" is a short-form anime series that revolves around the daily life of a polar bear, Shirokuma, who lives in a human-like manner in a small town. The narrative is episodic, with each episode presenting a self-contained story that highlights Shirokuma's quirky and often humorous interactions with the world around him. Despite being a polar bear, Shirokuma engages in ordinary human activities, such as shopping, cooking, and socializing, but with a unique twist that reflects his animal nature and size.

The series features a small cast of recurring characters who interact with Shirokuma in various ways. These include a penguin, who is often the subject of Shirokuma's playful teasing, and a young girl who occasionally visits Shirokuma's home. The interactions between Shirokuma and these characters are lighthearted and whimsical, often emphasizing the absurdity of a polar bear living in a human environment. The humor is derived from the contrast between Shirokuma's imposing physical presence and his gentle, almost childlike demeanor.

The plot of each episode is simple and straightforward, focusing on everyday scenarios that are exaggerated for comedic effect. For example, one episode might depict Shirokuma attempting to cook a meal, only to struggle with the size of his paws, while another might show him trying to fit into a human-sized chair. The series does not follow a continuous storyline but instead relies on its charming characters and humorous situations to engage the audience.

The tone of "Katte ni Shirokuma" is consistently light and comedic, with no overarching conflict or dramatic tension. The focus is on the amusing and often surreal aspects of Shirokuma's life, making it a relaxing and enjoyable watch. The series is designed to be accessible to a wide audience, with its humor and themes being universally relatable. The simplicity of the narrative and the endearing nature of the characters contribute to its appeal as a light-hearted, slice-of-life anime.