"Dirty Pair OAV 5" is part of the "Dirty Pair" original video animation series, continuing the adventures of Kei and Yuri, the two trouble-prone agents of the World Welfare Works Association (3WA). Known as the Lovely Angels, the duo is tasked with solving intergalactic crises, though their missions often result in unintended chaos. This installment maintains the series' blend of action, humor, and science fiction.

The story begins with Kei and Yuri being assigned to investigate a series of mysterious disappearances on a remote planet. The disappearances are linked to a powerful and enigmatic energy source, which has drawn the attention of various factions, including a rogue scientist and a criminal syndicate. As the agents delve deeper, they uncover a conspiracy involving experimental technology capable of manipulating matter and energy on a massive scale. The stakes escalate as the technology threatens to destabilize the entire region, prompting Kei and Yuri to act swiftly to prevent catastrophe.

Throughout the narrative, Kei and Yuri's dynamic personalities drive the story. Kei is brash, impulsive, and often relies on her combat skills, while Yuri is more analytical and level-headed, providing a counterbalance to Kei's recklessness. Their contrasting approaches to problem-solving create both tension and camaraderie, adding depth to their partnership. The supporting cast includes the rogue scientist, whose motives remain ambiguous, and the syndicate leader, who serves as the primary antagonist. These characters contribute to the story's complexity, with their actions and decisions influencing the plot's progression.

The plot unfolds through a series of action-packed sequences, including space battles, hand-to-hand combat, and high-stakes chases, interspersed with moments of humor and character interaction. The narrative maintains a brisk pace, ensuring that the stakes remain high while allowing for the series' trademark lighthearted tone. The resolution ties together the various plot threads, with Kei and Yuri ultimately thwarting the antagonists' plans, though not without leaving a trail of destruction in their wake. The ending reinforces the duo's reputation as agents who get the job done, albeit in their own chaotic fashion.