bby and Connor travel to coastal Witchfield Cove,home to the legendary giant worm,after the death of a camper. They find the worm is no myth but a Labyrinthodont,come through a portal in a cave,accidentally opened by a farmer and her son,tipping waste acids. After its disposal Connor accepts a role in Burton's secret project. Matt traces Emily via the black box he has given her and saves her from being buried in a vault,the former burial place of Ethan's sweetheart Charlotte. However Ethan escapes .

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