Kevin is trying to remember what he's supposed to do if there's an intruder in the house: stay calm, don't look scared, call 911. At the same time, he's doing his best to figure out how the heck some guy with a bow and arrow got into the room. The archer's explanation - "I lost my balance, fell off the tiger, and landed here" - just adds to Kevin's bewilderment.

The stranger's astonishing arrival is only the beginning of a dazzling adventure. For the man, whom Kevin calls Archer or Archie, has come from a centuries-old Korean kingdom. And it's up to Kevin to find a way to send him back through space and time...before history is changed forever.