"Burst Angel" is a manga series set in a near-future Japan where crime and lawlessness have escalated to unprecedented levels. The story unfolds in a dystopian society where the government has lost control, and private security firms have taken over the role of maintaining order. The narrative centers around a group of skilled mercenaries known as the "Burst Angel" team, who operate under the banner of the private security organization RAPT.

The protagonist, Jo, is a highly skilled and enigmatic gunfighter with a mysterious past. She is accompanied by Meg, a young and naive girl who serves as the team's mechanic and support. Together, they pilot a powerful and advanced mecha named "Jango," which becomes a crucial asset in their missions. The team is also joined by Sei, a calm and collected sniper, and Amy, a cheerful and resourceful hacker. Each member brings unique skills to the group, making them a formidable force against the criminal underworld.

The plot revolves around the team's various missions to combat crime and protect the innocent, often pitting them against dangerous adversaries and powerful criminal organizations. As the story progresses, deeper layers of the characters' backgrounds and motivations are revealed, particularly Jo's connection to a shadowy figure from her past. The narrative explores themes of loyalty, survival, and the moral complexities of operating in a lawless world.

The series blends action, science fiction, and elements of cyberpunk, with a focus on intense combat sequences and the dynamics between the team members. The interactions between Jo and Meg, in particular, highlight the contrast between Jo's hardened demeanor and Meg's innocence, adding emotional depth to the story. As the team faces increasingly dangerous challenges, their bonds are tested, and the stakes grow higher, culminating in a climactic confrontation that ties together the overarching narrative threads.