One morning, ordinary teenager Jim Lake Jr. stumbles upon a magical amulet on his way to school, and is thrust into the world of trolls beneath the surface of Arcadia. Strong-willed and adventurous, Jim is unprepared for the responsibilities that lie ahead. Forced to accept the noble title of Troll Hunter, Jim is sworn to protect the good trolls from powerful enemies bent on revenge. He is the first human to receive this honor, but he must adjust to this strange transformation: one moment he is an ordinary student worrying about the daily affairs of high school, and the next moment he is a participant in a super war that has lasted for centuries. This war threatens not only all troll creatures, but also the survival of mankind. Fortunately, he has a group of close human friends and a few good troll allies, and this brave teenager is more confident that he can save the world...of course, he must first go to gym class honestly. @www.airuib.comIn the final season, the fate of trolls and human civilization is at stake. The Trollhunters must race against time to stop Gunmar's plan and prevent the resurrected Morgana from bringing eternal night to the world. To defeat them, the Trollhunters will seek the help of the legendary wizard Merlin to unlock his ancient magic and release a powerful weapon. In the process, everyone's life and destiny are completely changed. Kelsey Grammer (Blinky), Mark Hamill (Dictatious), Lena Headey (Morgana), David Bradley (Merlin), Ron Perlman (Bular), Steven Yeun (Steve), Anjelica Huston (Queen Ursurna), Jonathan Hyde (Strickler), Amy Landecker (Barbara), Charlie Saxton (Toby), Lexi Medrano (Claire) and Fred Tatasciore participated in the voice acting. @www.kpw6.comTatiana Maslany and Diego Luna voice the new characters Aja and Krel. They are two new students with mysterious backgrounds who accidentally become helpers of the Trollhunters team to fight against the evil Morgana. After the end of "Trollhunters", the two characters Aja and Krel will become the protagonists of "3Below", the second chapter of the "Chronicles of Arcadia" trilogy. Emile Hirsch will replace the deceased Anton Yelchin as the voice of the protagonist Jim. Anton Yelchin had already completed some of the dubbing work in the third season before his death. Netflix said that they would "cleverly combine" the part dubbed by Anton Yelchin with the part dubbed by Emile Hirsch.