Upon returning to Arachna, the Spider Riders discover Invectids at the castle. Slate and his troops struggle to hold them off until Igneous turns the tide in their favour. The Invectids flee, only to return at night with a new type of Invectid to attack Slate and other guards.
Al regresar a Arachna, los Spider Riders descubren Invectids en el castillo. Slate y sus tropas luchan por mantenerlos a raya hasta que Igneous cambia el rumbo a su favor. Los Invectids huyen, sólo para regresar por la noche con un nuevo tipo de Invectid para atacar a Slate y otros guardias.
