Legend has it that anyone who sees the Demon Cat of Capitol Hill will be cursed with bad luck. 10 year old Fina Mendoza just saw it, and the last thing her family needs right now is more bad luck. Fina and her older sister Gabby just moved to Washington, D.C. to live fulltime with papa, a congressman from California. Fina loves spending time with Papa- even though he's always on the phone. But after Fina encounters the cat, disasters follow. And her only friend in Washington, a congressional dog, becomes the next target. The only way for Fina to save her family from future "cat"astrophe is to solve the mystery of the Demon Cat of Capitol Hill.