Ep 7. Brain Drain

In "Legion of Super Heroes" season 1 episode 7, titled "Brain Drain," the show follows a group of teenage superheroes in the 31st century as they confront a new threat to their team and the entire universe.

The episode begins with Brainiac 5, a member of the Legion, attempting to power up a device in their headquarters. However, something goes wrong and Brainiac 5 suddenly loses all of his intelligence and memories, becoming a childlike version of himself. The Legion soon realizes that Brainiac 5's intelligence has been drained away and is currently being used to power a giant robot on a distant planet.

The Legion decides to travel to the planet to rescue their teammate and stop the robot from destroying the universe. However, as they arrive on the planet, they discover that it is protected by a group of alien beings who are fiercely resistant to their help.

The aliens eventually agree to allow the Legion to enter their city, but only under strict supervision. Once inside, the team meets a scientist who is responsible for creating the robot that is draining Brainiac 5's intelligence. The scientist explains that he created the robot in order to defend his planet from an alien invader, but the robot soon got out of control and began draining the intelligence of anyone nearby.

As the Legion attempts to disable the robot, they are ambushed by the aliens who refuse to let them interfere with their planetary defenses. However, as the situation escalates, one of the Legion's members is forced to make a difficult decision in order to save the day.

Overall, "Brain Drain" offers an action-packed adventure that showcases the strengths and weaknesses of the Legion as a team. The episode also raises intriguing questions about the limits of science, the value of individual intelligence, and the importance of teamwork in saving the universe.