Robin Howe was a normal teenager until her police captain father is killed by henchmen of the evil Madame Crimson. When the justice system won't take any action to avenge her father, Robin takes it upon herself. Except her first attempt leaves her nearly dead and with Madame Crimson's people on her tail.
To protect Robin, her father’s former partner gives her a new identity that sends her to St. Martha’s Academy for Young Ladies in rural New Hampshire. There she tries to keep a low profile, which isn’t easy when Madame Crimson’s spoiled daughter Tonya takes a special interest in making Robin’s life there a living hell. Yet when a rival gangster tries to kidnap Tonya, Robin has to embrace her heroic destiny.