His teenage years were turning out to be quite an adventure, and when it came time to teach that smarmy school bully a lesson he proved to be the stuff of legend. Spanking buns came easy to Finn, and with a little training from the master Jake he was ready to enter the karate tournament and show them all what a totally chop-tastic karate hero looked like! But then he found himself face to face with his toughest foe yet- the one they call Tree Trunks!