"Gan & Gon" is a 13-episode anime series that centers on the comedic and chaotic adventures of two anthropomorphic dinosaurs, Gan and Gon, who find themselves in the modern human world. Gan is a green, bipedal dinosaur with a laid-back and carefree personality, while Gon is a small, red dinosaur with a mischievous and hyperactive demeanor. Despite their differences, the duo shares a strong bond and often collaborates to navigate the challenges of their new environment.

The narrative begins with Gan and Gon mysteriously appearing in a bustling city, where their dinosaur forms and antics quickly draw attention. Their primary goal is to survive and adapt to human society, but their lack of understanding of modern customs and technology leads to a series of humorous misunderstandings and slapstick situations. The duo frequently interacts with humans, ranging from curious onlookers to individuals who either exploit or assist them. These interactions often highlight the contrast between the dinosaurs' primal instincts and the complexities of human behavior.

Throughout the series, Gan and Gon encounter various episodic scenarios, such as attempting to find food, dealing with authority figures, and inadvertently causing chaos in public spaces. Their adventures are driven by their curiosity and desire to explore the world, but their actions often result in unintended consequences. Despite their frequent misadventures, the duo's resilience and resourcefulness allow them to overcome obstacles, often in unconventional and comedic ways.

The series maintains a lighthearted tone, with a focus on physical comedy and exaggerated reactions. The dynamic between Gan and Gon serves as the core of the narrative, with their contrasting personalities creating a balance between calm and chaos. While the plot is episodic, recurring themes of friendship, adaptability, and the clash between primal instincts and modern society are subtly woven into the story. The anime does not delve deeply into character backstories or overarching plotlines, instead prioritizing humor and entertainment through its episodic structure.

"Gan & Gon" is characterized by its straightforward and accessible storytelling, making it suitable for a wide audience. The series relies on visual gags, fast-paced action, and the charm of its titular characters to engage viewers. Its simplicity and focus on comedy make it a distinctive entry in the genre of anthropomorphic and slice-of-life anime.