Crong Crong Ujudaesodong

All of the sudden, aliens who look exactly like Crong appeared in Porong Porong Village! Crong followed those aliens who look and act just like him into the space. Pororo and Eddie decided to go to space to find Crong. Where did the aliens, who looked like Crong come from? Will Crong can return to Porong Porong village?