Watch Free Online HD Moviesjoy. After successfully trapping all the monsters back in the box, Maya is sent to the underworld whilst Mia is visited by two hunters, Thorn and Burt, who have been watching the sisters all this time. Maya faces her past as she must reunite with the monsters to escape Mythos. Unbeknownst to her, Mia journeys through Mythos to warn the monsters about the hunters' true intentions.