Lord Tempesto is a snake in every sense. As a human, he is slimy, deceitful, and manipulative, but when he's denied what he wants, he transforms into a gigantic, powerful snake. He wants nothing more than to rule the kingdom himself, and he'll stop at nothing to get what he wants.

Princess Melina is meant to rule her father's kingdom someday, but she doesn't want to do it alone. However, the search for a noble suitor brings a monster to the palace gates. When monster Lord Tempesto captures her and threatens to devour her beloved kingdom if she doesn't marry him, she has no choice but to submit to the repulsive monster's demands.

James, the son of a knight, hears about Princess Melina's plight and sets out on the long journey to rescue her. But his own skills aren't enough to win the fight against such a ruthless, powerful monster, and it takes teamwork between the captive and her rescuer to save the kingdom from the monster for good.

The Knight in Battered Armor shows children of all ages the importance of doing what is right no matter what and not being afraid to protect what is most important.