Episodes 3 and 4 of Teacup help us put the pieces of the puzzle in place. The previous episodes revealed that a spirit/alien being had entered Arlo after he got lost in the forest. The spirit/alien spoke a foreign language, and he seemed to have a plan to protect Arlo and his family. But was the alien good or evil? In the new episode, Arlo told his sister, Meryl, and her friend, Nicholas, that the creature living inside him was good and did not mean any harm to him or his family. The creature offered to help Arlo and his family find a cure that could help them cross the line drawn by the stranger in the mask.

Spoiler Alert

Who Was Harbinger?

In Teacup episode 3, Arlo introduced his sister to the alien living in him. Arlo called him Harbinger, and according to the creature, something big and disastrous was coming.