From whatswithjeff.com: "Sword Art Online 17 is up next. The next episode is entitled the Captive Queen. Most probably, the captive queen here refers to Asuna, being held captive in a cage above the Yggdrasil. Kirito was able to login to ALfheim online and met a new companion, Lyfa, who was attack by other players. Find out next what happened in SAO Episode 17." (Anime, Sword Art Online)