"Dore Dore no Uta" is a short anime series that revolves around the daily lives and adventures of a group of anthropomorphic animals living in a whimsical, pastel-colored world. The central characters include a cheerful rabbit named Usako, a thoughtful bear named Kumakichi, a mischievous raccoon named Tanukichi, and a shy squirrel named Risu. Each episode is structured as a self-contained story, often focusing on simple, slice-of-life scenarios that highlight the characters' interactions and their playful exploration of their environment.

The narrative frequently incorporates musical elements, with characters breaking into song to express their emotions or to resolve conflicts. These songs are integral to the storytelling, often serving as a means to convey themes of friendship, cooperation, and problem-solving. The tone is lighthearted and aimed at younger audiences, with an emphasis on positive messages and gentle humor.

The setting is a vibrant, fantastical world filled with imaginative landscapes, such as candy-colored forests, sparkling rivers, and cozy homes built into trees. The characters engage in activities like picnics, treasure hunts, and seasonal celebrations, which are depicted with a sense of wonder and innocence. Conflicts are typically minor and resolved through teamwork and understanding, reinforcing the series' focus on harmony and mutual support.

While the plotlines are straightforward and episodic, the charm of "Dore Dore no Uta" lies in its simplicity and the endearing personalities of its characters. The series avoids complex narratives or dramatic tension, instead opting for a soothing, feel-good atmosphere that appeals to its target demographic. The combination of music, vibrant visuals, and relatable, heartwarming moments makes it a distinctive entry in the genre of children's anime.