1739_John monster in the box

One day, a UFO dropped a box on the ground and leave quickly. A creature(monster A played) picked up box and take it to home. The nest day morning, a monster(monster C played) come out of the box and destroy the village, killed the villagers(monster A,B and C played). Then the sense came back to creature pick up the box. He just have a dream. When he opened box, there was nothing in the box.