Amaya is a professional locksmith. She gets called to help open clients homes when they lose or forget their keys... But that's just a cover. Her real job is to accomplish "missions" she receives from her "clients". But who are these clients? They're business owners who want to steal data from rival companies. She obtains her nickname "Black Fox" from all her successful break-ins. But what happens if she gets caught in the act...and by who?