A strange discovery that leads to a night of Halloween horror!
Mike, Brad and Sara are trick-or-treating in Albany, New York . . .
when Mike makes a mysterious discovery.
Not realizing any danger, he and his friends ignore the new find and get ready for a Halloween party that night at their school.
Their night is about to be turned upside down.
For Mike's discovery reveals an ancient secret. A secret hidden for a long, long, time.
A secret that leads to a dangerous mission.
Mike, Brad, and Sarah set out . . . but they soon find out that their mission won't be as easy as they thought.
And if their dark ninjas can stop them, they will!