When Ethan s grandma suggests they take a zip-line to school, Ethan realizes that his grandma is a little different. In fact, she s a ninja! Ethan is the hit of the school when the kids see that his grandma is a ninja. She drops from the ceiling at show and tell, teaches the kids karate moves, and how to do back flips in slow motion. But when his grandma deflates the soccer team s ball, everyone is upset including Ethan. Why can t he just have a regular grandma? Everyone is even more upset the next day when the team is losing the game. But when Ethan s grandma shows up and cheers him on, Ethan tries out his new karate move and back flip and wins the game! I m sorry I told you not to be a ninja! said Ethan. I m going to be a pirate instead! says his grandma."