A Hero's Journey (Tales of the Scarlet Knight #1)

Dr. Emma Earl never wanted to be a hero. But when she finds a magic suit of armor that can deflect bullets and turn her invisible, she becomes part of an ancient war between good and evil. It’s up to Emma as the latest incarnation of the heroic Scarlet Knight to save Rampart City from the fiendish Black Dragoon and his plan to rule first the city and then the whole world!