"Otome Chibaku Yūgi" is a short anime series that revolves around a group of high school girls who become entangled in a mysterious and dangerous game. The story begins when the protagonist, a seemingly ordinary student, receives an enigmatic invitation to participate in a game known as "Chibaku Yūgi." This game, which translates to "Girls' Explosive Game," involves a series of challenges that test the participants' physical and mental limits. The rules are unclear at first, but it becomes evident that failure to complete the tasks results in severe consequences, including death.

The main characters include the protagonist, who is initially reluctant but driven by curiosity and a sense of duty to protect her friends. Her closest friend, a cheerful and optimistic girl, provides emotional support but also becomes a target of the game's escalating dangers. Another key character is a mysterious transfer student who seems to know more about the game than she lets on, often providing cryptic advice and warnings. The group is rounded out by a competitive and headstrong classmate who views the game as a challenge to be conquered, often clashing with the others over strategy and priorities.

As the story progresses, the girls uncover the dark origins of the game, which is tied to a tragic incident from their school's past. The challenges they face grow increasingly perilous, forcing them to confront their fears, insecurities, and the fragility of their relationships. The narrative explores themes of trust, sacrifice, and the lengths to which individuals will go to survive. The climax reveals the true purpose of the game and the identity of its orchestrator, leading to a tense and emotionally charged resolution.

The series is structured around a series of episodic challenges, each escalating in intensity and stakes, while also delving into the backstories and motivations of the main characters. The pacing is brisk, with a focus on maintaining tension and suspense throughout. The interplay between the characters and their evolving dynamics form the emotional core of the story, as they struggle to navigate the game's deadly trials while grappling with their own personal demons.