"Doubutsu Olympic Taikai" centers around a whimsical and competitive world where animals from various species participate in an annual Olympic-style event. The narrative unfolds in a vibrant setting where animals, anthropomorphized to varying degrees, showcase their unique abilities and skills in a series of athletic competitions. The event is organized by a council of elder animals, who ensure fairness and uphold the spirit of sportsmanship.

The main characters include a diverse group of competitors, each representing their species. A young and ambitious rabbit, known for his speed and agility, aspires to win the gold medal in the sprinting events. A determined elephant, often underestimated due to her size, competes in strength-based challenges, aiming to prove that perseverance outweighs physical limitations. A clever fox, skilled in strategy and adaptability, participates in team-based games, using wit to outmaneuver opponents. A graceful swan, embodying elegance and precision, excels in synchronized swimming and gymnastics, showcasing the beauty of movement.

The plot progresses through the preparation, trials, and eventual competitions of the Olympic Taikai. Each character faces personal challenges, such as overcoming self-doubt, rivalries, or external obstacles, while striving to achieve their goals. The series highlights themes of teamwork, resilience, and the celebration of diversity, as animals of different backgrounds and abilities come together to compete. The competitions are filled with moments of tension, humor, and camaraderie, culminating in a grand finale where the true spirit of the event is celebrated.

Throughout the series, the interactions between characters reveal their growth and development, both as individuals and as part of a larger community. The narrative balances lighthearted moments with deeper reflections on ambition, friendship, and the importance of striving for excellence while respecting others. The Olympic Taikai serves as a backdrop for exploring the unique qualities of each character and the universal values of determination and unity.