Martha is just like any other granny—she wears shawls, rides a scooter, likes a nice lunch after church (thank you Jesus!), and she loves the Supermall almost as much as she loves her family. Until the day her entire beloved family is slain by bloodthirsty school teachers when her grandson loses the crucial championship basketball game. Martha is left for dead, and with nothing left to live for. But unlike other grannies, Martha's not going to take this massacre lying down! With the help of the Mascots, a race of living sports mascots, Martha trains to become vengeance on her family's murderers. Whether this means slaughtering cheerleaders, raping the principle, or giving truck drivers a bit of road head, Martha's ready to do whatever it takes to go Grambo!