Episode Title:Sentinel.Episode Description:The world tourists arrive on Easter Island and encounter an alien sentry named Nokkar, who is stubbornly convinced that the gargoyles are alien enemies of Earth. Elisa has her memory temporarily wiped by Nokkar, but is still loyal to her friends. This convinces Nokkar of his misjudgment. Elisa convinces Nokkar to make new friends to stand by him as he keeps watch on Earth.