"Tokusou Sentai Dekaranger The Movie: Full Blast Action" is a manga adaptation of the live-action film from the "Super Sentai" franchise, specifically tied to the "Dekaranger" series. The story centers on the Special Police Dekaranger, a team of interstellar law enforcers tasked with maintaining peace across the galaxy. The narrative begins with the Dekaranger team investigating a series of mysterious crimes linked to a powerful artifact known as the "Galaxy Cannon," a weapon capable of immense destruction. The team discovers that the crimes are orchestrated by a rogue alien criminal named Agent Abrella, who seeks to harness the Galaxy Cannon's power for his own nefarious purposes.

The Dekaranger team, consisting of Ban (DekaRed), Hoji (DekaBlue), Sen (DekaGreen), Jasmine (DekaYellow), and Umeko (DekaPink), along with their robotic partner Doggie Kruger, must work together to stop Abrella before he can unleash the weapon's devastating capabilities. The plot unfolds with a series of high-stakes battles, strategic investigations, and moments of teamwork as the Dekarangers confront Abrella and his minions. The story emphasizes the themes of justice, camaraderie, and the importance of protecting innocent lives.

As the Dekarangers close in on Abrella, they face numerous challenges, including the criminal's cunning tactics and the moral dilemmas posed by the Galaxy Cannon's destructive potential. The climax involves a dramatic showdown where the team must combine their skills and resources to outmaneuver Abrella and prevent the weapon's activation. The resolution highlights the Dekarangers' unwavering commitment to their mission and their ability to overcome seemingly insurmountable odds through unity and determination. The manga effectively captures the action-packed and character-driven essence of the "Dekaranger" series, providing a concise yet engaging adaptation of the film's storyline.