After successfully arriving in the Spirit World, Korra and Jinora get separated. Jinora ends up at Wan Shi Tong's Library, where she is captured by Unalaq. Korra finds herself in a dark forest as a four-year-old, where she encounters Iroh's spirit. With the help of the former Fire Nation general, she helps a lost dragon bird spirit, who in turn helps her find the spirit portals. There, she is forced by her uncle to open the northern portal, lest he destroy Jinora's soul.
Elenco: Janet Varney , J.K. Simmons , David Faustino , Aaron Himelstein , Adrian LaTourelle , Aubrey Plaza , Chris Hardwick , D.B. Sweeney , Daniel Dae Kim , Darcy Rose Byrnes , Dee Bradley Baker , Eva Marie Saint , James Remar , John Michael Higgins , Kate Higgins , Kiernan Shipka , Lance Henriksen , Lisa Edelstein , Logan Wells , Maria Bamford , Mindy Sterling , P.J. Byrne , Seychelle Gabriel , Steve Blum .