Loopy and Petty can't understand why roommates like Pororo and Crong or Poby and Harry get into so many arguments. Loopy and Petty believe they'll become closer friends when they become roommates.

Scared, Pororo runs into his friends and tells them he thinks there's a monster in the cave. However, his friends don't believe him, call him a scaredy-cat, and compare him to brave Petty.

Pororo and his friends are an inch away from winning a singing contest which they joined purely for fun. As they advance closer and closer to the final round, the villain Big Ben’s petty ...