Harris is sure Zeke will win the Halloween costume contest at school, but when one of the other contestants tries to sabotage Zeke, it's up to Harris and Roxy to stop him.
Harris and Roxy visit Zeke's house after school, then Harris's parents invite Zeke's family to dinner, but trying to convince anyone that they are aliens only gets Harris grounded.
Harris invites Zeke to join him for a weekend at Beaver Scout Camp, but Zeke needs help understanding the activities and hiding his alien abilities from the other campers.
When Zeke learns that his parents' research mission is over and they must return to their home planet, Tragas, he and his friends seek a way to keep the family on Earth.
When Zeke uses his powers to become a superstar on the youth baseball team, ignoring Harris's concern that this is cheating, their friendship is in trouble.