A space capsule that landed on Earth 65,000,000 years ago has been unearthed by archaeologists. While Dr. Paradigm has taken interest in the space capsule, an incident involving the capsule's prisoner Bad Rap causes Mantaman to fall under his control (the alien whose DNA was used to create Mantaman was one of Bad Rap's many creations) as they plot to control the largest radio telescope in order to contact Bad Rap's fellow Raptors. Now the Street Sharks must work to free Mantaman before Bad Rap's transmission to his fellow Raptors gets through.

President Horne contacts the Street Sharks informing them that a UFO has been sighted in the Solar System. Upon investigating, the Street Sharks meet the Dino Vengers T-Bone, Stegz, Bullzeye, and Spike. The Street Sharks learn from them that they are after Bad Rap and the Raptors. The Street Sharks and the Dino Vengers join forces when the Raptors steal different weapons from different countries in order to make the other countries think they are being attacked by the other.

While fighting the Raptors, the Street Sharks and the Dino Vengers hear from President Horne that the military is testing their stealth Super Shadow chopper. As the Street Sharks and the Dino Vengers work to protect the Super Shadow from the Raptors, Dr. Paradigm takes interest in the Raptors as he leads Shrimp Louie and Tentakill into finding them where he will steal the Super Shadow for them in exchange for Velociraptor DNA. After Dr. Paradigm obtains the Super Shadow, the Raptors trick Dr. Paradigm by giving him iguana DNA. The Street Sharks and the Dino Vengers must work to reclaim the Super Shadow from the Raptors.

During winter, the Raptors make plans to warm up Earth in order to make it more hospitable for the Raptors. They do this by making Mt. Cauldron (a dormant volcano near Fission City) erupt by firing a missile into it so that the heat from it can be trapped in Earth's atmosphere. After the Street Sharks and the Dino Vengers thwart that plan, the Raptors do what they did on Calderas 3 by using their computer to activate every dormant volcanoes on Earth. Now the Street Sharks and the Dino Vengers must prevent the Raptors from activating the dormant volcanoes on Earth.

At the time when Big Slammu prepares for Fission City's comic book convention at a local convention center to meet his favorite comic book writer Jake Langstrom, Bullzeye learns about comic books and follows Big Slammu to the convention center. At the same time, the Raptors head to the Munitions and Armaments section of the Convention Center in order to steal the latest weaponry there.

When the Street Sharks and the Dino Vengers stop the Raptors from stealing a submarine, Stegz, Spike, and Bullzeye come down with a virus with the same symptoms as the virus the Dino Vengers once contracted on the planet Zirus 10. The Street Sharks and T-Bone race against time and the Raptors to the Amazon Rainforest to get to a special pharmaceutical fungus that would help cure the sick Dino Vengers before its final symptom takes its toll on them in the next 24 hours.

In order to track the Dino Vengers to their lair, the Raptors cause havoc at an amusement park and ambush the Dino Vengers where they managed to secretly place a tracking device on Stegz so that they can find the Dino Lair. When the Dino Vengers end up defeated and captured as part of Bad Rap's plot to launch them to the stars in a stolen missile, the Street Sharks must rescue the Dino Vengers before the Raptors can launch the missile they are on.

The Street Sharks have suddenly become human again due to a formula made by Dr. Piranoid as part of a plot to keep the Street Sharks human permanently.