In December 1959, the Carson family meets with famous explorer Mike Worley in South America to investigate an ancient, giant spaceship that had crashed in the Amazon jungle in the distant past. The ship's systems trap the four and expose them a mutagenic substance intended to give the ship's crew powers as warriors on whatever planet they visit. The substance would later be nicknamed, "Gunk." They escape after brief exposure to the Gunk, but it gives each of them superpowers which they use to fight for good as the original Danger Unlimited. The members include Miss Mirage (Connie Carson), who can project illusions. Her brother Thermal (Calvin Carson) can fly and project heat and cold. Their father, Doc Danger (Dr. Robert Carson), is a brilliant scientist who had his intellect augmented even more, continuing his mutation over the years with an increasingly enlarged cranium and atrophied limbs until he became nothing more than an enormous head by 1985, supported by a flying platform with robotic manipulator arms. And Hunk (Worley), who gains rough, stone-like, superhard skin and superstrength. Connie was immediately attracted to Mike and they would eventually marry. In 1985, the team engages in a final battle with Umbra, their nemesis. During Umbra's attack on the team's headquarters, Thermal is seriously injured and Doc Danger places him into a biological stasis chamber before turning to battle Umbra alone. Nobody knows what happened after that, but Doc Danger shuts down all systems and seals the headquarters in a force field with a time lock set to disengage in 75 years. The team was missing and presumed dead.