A tiny, adorable version of the King of the Monsters tries to conquer the most daunting challenge of all: everyday life. Chibi Godzilla, a small and cute creature, lives in the home of Satomi, a regular office worker. Despite his diminutive size, he dreams of one day becoming the King of the Monsters. The series documents his daily adventures as he navigates ordinary activities, from helping with chores to training for his future title, often with humorous and heartwarming results.

The main character is Chibi Godzilla himself, a curious and playful kaiju who uses his iconic fire breath not for destruction, but for practical tasks like toasting bread, lighting birthday candles, or warming up his bathwater. His human companion, Satomi, is a young professional who cares for him and endures his antics, which sometimes include accidentally causing her to drop her food or imagining him destroying her workplace. The series also features supporting appearances from chibi versions of other classic Toho monsters, including Chibi Mothra, Chibi Rodan, and the three-headed Chibi Ghidorah, who often appears as a playful rival.

The setting is a modern, cozy Japanese home where Chibi Godzilla and Satomi live together. Each episode is an ultra-short, standalone vignette, typically lasting only about one minute or even just 35 seconds. Notable narrative arcs are simple and episodic, focusing on slice-of-life situations. One episode follows Chibi Godzilla's wish to fly like Rodan. Another sees Satomi forgetting to take out the garbage, leading to a small crisis. Holiday-themed episodes also appear, such as a Christmas story. A recurring visual gag involves Satomi's t-shirts, which bear words like Oxygen and Destroyer, subtle nods to the larger Godzilla mythos. The entire series serves as a lighthearted and accessible introduction to the Godzilla franchise, celebrating its 65th anniversary by reimagining its iconic characters for a younger audience.