She's high-kicking, power-punching, back-flipping, quick as a cat, silent as a shadow...And a pensioner? Josh and Jessica are thrilled to be in Japan for the Olympics - but disaster hits the Games when the Japanese athletes are struck down with a suspicious illness. The twins' high-kicking granny and her team of ninja spies are desperate to investigate ...but they've been thrown in jail for a crime they didn't commit! So it's up to Josh and Jessica to save the day...and the Olympics. With no back-up plan and time running out, can they really hope to defeat a deadly criminal mastermind and his two champion-wrestler henchmen? Join Josh and Jessica for a third, thrilling martial arts adventure series packed full of crime-fighting action.