Ep 1. Dee-Deemensional / Magmanamus / Maternal Combat

In Dexter's Laboratory season 1 episode 1, three separate stories take place following the adventures of the titular boy genius and his family.

The first story, "Dee-Deemensional", has Dexter's older sister Dee Dee accidentally entering his laboratory and activating one of his inventions, transporting them both to another dimension. They must work together to find their way back home while avoiding the dangers of this strange new world.

The second story, "Magmanamus", sees a giant lava monster attacking the city. Dexter wants to defeat the creature, but the only way to do so is to shrink down and enter its body to take it down from the inside. With the help of his robot, Dexter enters the monster's body and must navigate its internal organs to find its weak spot.

The final story, "Maternal Combat", centers around Dexter's mom, who becomes a superhero after being exposed to a radiation experiment. But when the evil villain, Badaxtra, shows up and threatens the city, Dexter's mom must face off against her own son in a battle for the greater good.

Throughout the episode, viewers get a glimpse into the chaotic and inventive world of Dexter's Laboratory, where technological innovations and scientific experimentation go hand in hand with family dynamics and the never-ending struggle between good and evil. The characters are quirky, the humor is clever, and the storytelling is fast-paced and exciting, setting the stage for the many adventures that are sure to follow in the rest of the series.