"Manga de Wakaru! Fate/Grand Order" is a comedic spin-off of the popular mobile game "Fate/Grand Order," presented in a chibi-style animation format. The series parodies the original game's mechanics, characters, and lore, offering a lighthearted and exaggerated take on the franchise. The narrative revolves around Ritsuka Fujimaru, a novice Master tasked with saving humanity by correcting anomalies in history. Accompanied by Mash Kyrielight, a Demi-Servant, Ritsuka interacts with various Servants summoned from different historical and mythological backgrounds.

The plot humorously explores the challenges of being a Master, such as managing resources, understanding Servant abilities, and navigating the complexities of the Chaldea organization. Key characters include the overworked and perpetually stressed Romani Archaman, the stern but caring Da Vinci, and a host of Servants like the ever-hungry Artoria Pendragon (Saber), the mischievous Gilgamesh, and the overly enthusiastic Cu Chulainn. Each episode features self-contained comedic scenarios, often breaking the fourth wall and poking fun at the game's mechanics, such as the gacha system, grinding for materials, and the unpredictable behavior of Servants.

The series maintains a fast-paced, gag-driven structure, with exaggerated character traits and absurd situations. It does not follow a continuous storyline but instead focuses on episodic humor, making it accessible to both fans of the original game and newcomers. The chibi art style enhances the comedic tone, emphasizing the playful and irreverent nature of the series. While it lacks the depth and drama of the main "Fate/Grand Order" narrative, it serves as a humorous companion piece, celebrating the quirks and charm of the franchise.