Publisher's Synopsis
Mordecai and Rigby find themselves looking for something new when Benson bans video games. They find themselves at a store purchasing a new card game. Mordecai and Rigby find they are actually good at it and start bringing in more people, not realising that the more people that join, the stronger it gets. Soon the whole park is taken over by fictional creatures! It's up to Mordecai and Rigby to save the day - if they can stop trying to outdo each other first.