S1·E15 Lost Paradise

Van is enveloped into the world of the dead, and Hitomi goes to retrieve him -- but not before envisioning the destruction of Atlantis. The previous battle's trauma disorients Dilandau as well, so Folken sends out Naria and Eriya (the intensely loyal leopard girl twins who directly answer to him) to continue the mission of capturing the Escaflowne.