Frog Kingdom (2013) When the Frog King announces that the winner of the Froglympics will marry his daughter, Princess Froglegs, she runs away, and begins training as a commoner. She is determined to win both the games and her freedom. Meanwhile, the villainous snake Serpent has ideas of his own: to ruin the Froglympics and take over the kingdom. With a little luck - and a little help from their friend, the trusty Sidekick - Freddy and Princess Froglegs must save Frog Kingdom from the wicked clutches of Serpent.