本剧是制片人Guillermo del Toro联合梦工厂为Netflix制作的《阿卡迪亚传说》（Tales of Arcadia）三部曲的第二部，也是第一部《巨怪猎人》（Trollhunters）的续篇。故事描述某外星王国突遭邪恶独裁者的占领，一对王室兄妹（一位王子及其尚未结婚的王妃）在保镖的陪伴下逃往地球。他们的飞船在阿卡迪亚橡树镇附近坠毁，来自银河系各个角落的赏金猎人接踵而至。为了掩人耳目，他们决定改头换面混入地球普通人当中，但要想真正融入地球人的生活对他们来说是一项艰巨的任务。与此同时，他们想尽一切办法来维修飞船，以便早日返回母星球驱逐坏人、重建家园。Diego Luna为外星王太子（未来国王）Krel Arikidion配音，Tatiana Maslany为准王妃（未来王后）Aja Arikidion配音，Nick Offerman为他们的保镖Varvatos Vex配音。Krel和Aja在《巨怪猎人》第二季结束前已经现身，他们对Jim、Toby和Claire来说是一对「古怪的新同学」，本剧将把剧情时间倒退回他们刚刚来地球的时候。在这之后，Jim、Toby、Claire和其他《巨怪猎人》角色都将在该剧中亮相，两部剧集的情节也会经常交叉。
天外三侠 (季节 2)
Moving Day (集 1) 7.2
播出日期: 2019-07-12
运行时间: 24 min
概述: Left vulnerable after Omen's attack, the royal heirs look to conceal their damaged ship but are soon confronted by the bounty hunter Magmatron.
Moonlight Run (集 2) 7.2
播出日期: 2019-07-12
运行时间: 24 min
概述: Aja and Krel enlist Stuart to help find their former ally, who’s being held prisoner at a bounty hunter outpost on the moon.
Dogfight Days of Summer (集 3) 7.2
播出日期: 2019-07-12
运行时间: 24 min
概述: With General Morando's invasion of Earth imminent, Krel tries to stop the fleet's advance with unwitting help from the kids of Arcadia.
Mother's Day (集 4) 7.5
播出日期: 2019-07-12
运行时间: 24 min
概述: Mother, the AI controlling the royals’ ship, reflects on keeping the peace between her quarreling family. Morando discovers a secret hidden on Earth.
Ill Gotten Gains (集 5) 7.0
播出日期: 2019-07-12
运行时间: 24 min
概述: Colonel Kubritz stages a phony quarantine of Arcadia High School in a ploy to capture the royals -- and their advanced weapons technology.
There's Something About Gwen (of Gorbon) (集 6) 7.2
播出日期: 2019-07-12
运行时间: 24 min
概述: Stuart gets an unexpected visit from his ex-girlfriend. Krel helps Toby and Eli produce a short film, "Kleb or Alive," for a local contest.
Asteroid Rage (集 7) 5.3
播出日期: 2019-07-12
运行时间: 24 min
概述: Unable to stop an asteroid hurtling toward Earth, Kubritz pleads with the royals to help destroy it by offering stored alien technology from Area 49B.
Luug's Day Out (集 8) 7.6
播出日期: 2019-07-12
运行时间: 24 min
概述: Krel builds a prototype device that will create a wormhole back to Akiridion-5, but Luug swallows it whole before it can be tested further.
The Fall of House Tarron (集 9) 7.2
播出日期: 2019-07-12
运行时间: 24 min
概述: The last defenders of House Tarron face off against General Morando and his army of Omen robots in an all-out battle for survival.
The Big Sleep (集 10) 7.2
播出日期: 2019-07-12
运行时间: 24 min
概述: With General Morando searching for Gaylen's Core, Aja and Krel must travel into their parents' subconscious to learn the core's location first.
Race to Trollmarket (集 11) 7.2
播出日期: 2019-07-12
运行时间: 23 min
概述: After learning the location of Gaylen’s Core, Toby calls Trollhunter Jim Lake, and Blinky advises the royals to consult the Soothscryer.
A Glorious End, Part 1 (集 12) 7.2
播出日期: 2019-07-12
运行时间: 23 min
概述: As the town of Arcadia gathers for the premiere of "Kleb or Alive," an army of Omens, led by an armored Kubritz, makes plans to lure out the royals.
A Glorious End, Part 2 (集 13) 7.2
播出日期: 2019-07-12
运行时间: 24 min
概述: With the fate of the universe at stake, the royal heirs and their allies must gather their forces for the ultimate battle to defeat General Morando.
季
集 13
集 13