Life isn't typical for young Samuel Smythe. Just a year ago, he discovered that his father is a spy with an international organization and, together with his father and the aid of family and friends, he helped foil a wicked plot devised by his evil math teacher. Now, Samuel Smythe and his spy family and friends are on another epic adventure as they rush to prevent another impending national disaster created by yet another evil mastermind. But first, they must solve the mystery of the Snake Bird...