"Digi Charat" centers around Dejiko, a cat-eared alien girl from the planet Di Gi Charat, who arrives on Earth with her companions Puchiko and Gema. Dejiko aspires to become a famous idol, but her journey is far from straightforward. The series unfolds in a series of comedic and often absurd vignettes, blending slapstick humor with surreal elements. Dejiko’s attempts to achieve stardom are frequently derailed by her own clumsiness, her rivalry with the mischievous Rabi-en-Rose, and the antics of her companions. Puchiko, her younger and more stoic counterpart, often provides a deadpan contrast to Dejiko’s over-the-top personality, while Gema, a small robotic creature, serves as a source of comic relief with his nonsensical behavior.

The setting primarily revolves around the Gamers retail store, where Dejiko and her friends work part-time. The store’s manager, a laid-back and somewhat indifferent character, often finds himself caught up in the chaos caused by the group. The narrative lacks a continuous plotline, instead relying on episodic, self-contained stories that highlight the characters’ eccentricities and interactions. Themes of ambition, friendship, and rivalry are explored through exaggerated and humorous scenarios, often breaking the fourth wall and embracing meta-humor. The series’ tone is lighthearted and whimsical, with a focus on quick gags and visual comedy rather than deep character development or intricate storytelling. Despite its simplicity, "Digi Charat" has become notable for its quirky charm and distinctive art style, which complements its offbeat humor and fast-paced narrative.