Original sentence: The spirit of the sensei lives on, and explains that the stone he collected is one of 4 powerful stones, and it is Ninja's mission to collect all the stones and defeat the evil Master O-Dor and his Ranx army
Edited sentence: The spirit of the sensei lives on, and explains that the stone he collected is one of 4 powerful stones, and it is Ninja's mission to collect the three remaning stones and defeat the evil Master O-Dor and his Ranx army