Plot hole: When the 3 ninjas' Grandpa is in hospital, he phones them and complains that no-one at the hospital speaks English. Not only is this a strange complaint to make about a hospital in Japan, but later in the film he is seen speaking in Japanese. He should therefore be able to easily communicate with people at the hospital.AidanN
Grandpa Mori Shintaro: Before you go to Japan, you will be tested on the field of battle. Remember, four strands of rope, apart you can snap, but together you can be strong, now get out there and kick butt.