Five friends go on a road trip by bicycle from Bangkok to Lampang and experience many adventures along the way.

Archaeologists who gone to excavate the remaining of ancient artifacts were killed. An influencial person in the village blames the heroine's grandmother, accusing her of being ghouls. When more people in the village were killed, archaeologists who try to find the culprit found that Yhipwas nearby. Therefore, everyone thought Yhip was a murder. Meanwhile, Yhip that were rescued and healed for 20 years have begun to create chaos and the chaotic story was occurred. However, the conclusion of the chaos has calling a humor. Who actually was the real killer? Help them find answers at Reformation.