Flat Stanley is back! But whoever heard of a flat Ninja? Stanley and his brother, Arthur, are such huge fans of the ninja movie star Oda Nobu that they decide to send him something even better than fan mail - Stanley himself! Soon enough, Flat Stanley is in Japan, seeing the country with his idol. But when trouble surprises them... Flat Stanley is back! But whoever heard of a flat Ninja? Stanley and his brother, Arthur, are such huge fans of the ninja movie star Oda Nobu that they decide to send him something even better than fan mail - Stanley himself! Soon enough, Flat Stanley is in Japan, seeing the country with his idol.

But when trouble surprises them...