Watch 123Movies. The Otherworld is an original story and mystical tale inspired by Celtic mythology and Irish legends. One of the most fascinating characters in Celtic mythology, the Warrior Lugh, crosses Woodland heading to Tara to join the court of King Nuada and the Tuatha De Danann. Nuada and his kingdom are at this time oppressed by the Fomorian tribe, and trying to retaliate for their land and freedom. During Lugh's travel, he is bewitched by a faerie (Immrama) to a Beltane celebration, when the line between the human and fairy world are vulnerable and Lugh crosses unaware to The Otherworld - the fairy realm. Lugh and Immrama fall in love. However, they live in different times and worlds...