"Gabriel Dropout" centers on the lives of angels and demons sent to Earth to study human behavior, blending comedy and slice-of-life elements with supernatural themes. The protagonist, Gabriel White Tenma, is an angel from heaven who initially embodies kindness and diligence. However, after becoming addicted to video games and the internet, she transforms into a lazy, unmotivated individual who prioritizes leisure over her angelic duties. Her behavior contrasts sharply with her original purpose, creating a humorous dynamic.

Gabriel’s closest companion is Vignette April Tsukinose, a demon who, despite her origins, is kind-hearted and responsible. Vignette often takes on the role of caretaker for Gabriel, cleaning up after her and ensuring she meets basic responsibilities. Their friendship highlights the irony of their roles, as the demon exhibits more angelic qualities than the actual angel.

The series also features Satania, a demon with grandiose ambitions of causing chaos and mischief. However, her plans often backfire due to her incompetence and lack of genuine malice. Satania’s over-the-top personality and frequent failures provide much of the show’s comedic relief. Raphiel Ainsworth Shiraha, an angel with a mischievous and manipulative streak, frequently teases Satania, adding to the comedic tension. Raphiel’s calm demeanor and subtle cruelty contrast with Satania’s loud and clumsy nature, creating a recurring source of humor.

The narrative unfolds through episodic adventures, focusing on the daily lives and interactions of these characters as they navigate human society. The series explores themes of identity and role reversal, as the angels and demons often defy the expectations associated with their origins. The humor arises from the contrast between their divine or infernal backgrounds and their mundane, often flawed behavior. The show maintains a lighthearted tone, with occasional moments of sincerity that highlight the characters’ growth and relationships.