| 1: In Plain Sight |
| Feb 16, 2018 |
| While hunting for gemstones needed to complete the Dragon Eye 2, Hiccup learns an old friend isn't who he seems. Dagur faces a bully from his past. |
| 2: No Bark, All Bite |
| Feb 16, 2018 |
| Stoick and Hiccup are led on a wild goose chase in search of willow bark for medicine, leaving Berk vulnerable to an enemy attack. |
| 3: Chain of Command |
| Feb 16, 2018 |
| During a trip to Wingmaiden Island to find a Dragon Eye lens, Snotlout challenges Hiccup’s leadership. On another island, an unlikely romance blooms. |
| 4: Loyal Order of Ingerman |
| Feb 16, 2018 |
| Upset after learning his ancestors were Hunters who killed off Dramillions, Fishlegs sets out to see if he can find any of the dragon species left. |
| 5: A Gruff Separation |
| Feb 16, 2018 |
| Hiccup grows wary when Gruffnut arrives on the twins' 19th birthday to administer a Thorston coming-of-age ritual involving three dangerous challenges. |
| 6: Mi Amore Wing |
| Feb 16, 2018 |
| An announcement leads Astrid to question her relationship with Hiccup. The Riders discover an Armorwing that has a Dragon Eye lens welded to its body. |
| 7: Ruff Transition |
| Feb 16, 2018 |
| While visiting Wingmaiden Island, a baby Razorwhip bonds with Ruffnut, who suddenly finds herself trying her hand at being a Wingmaiden. |
| 8: Triple Cross |
| Feb 16, 2018 |
| When the Flyers try to kill him because he's no longer useful, Viggo forces Hiccup to help him get revenge by stealing their Dragon Eye and lenses. |
| 9: Family Matters |
| Feb 16, 2018 |
| After learning Krogan is using a Deathsong to lure and subdue Singetails for his growing army of Flyers, the Riders set out to rescue the dragon. |
| 10: Darkest Night |
| Feb 16, 2018 |
| While on night patrol, Stoick is ambushed by the Flyers and gravely injured, leaving Hiccup torn between his duties as a son and as the Riders' leader. |
| 11: Guardians of Vanaheim |
| Feb 16, 2018 |
| After learning several Flyers followed Heather to Vanaheim, the Riders must stop them from reporting the sacred island's location to their leader. |
| 12: King of Dragons, Part 1 |
| Feb 16, 2018 |
| With the fifth lens in place, the Dragon Eye 2 unveils the apparent King of Dragons, and Fishlegs immediately knows what it is and where to find it. |
| 13: King of Dragons, Part 2 |
| Feb 16, 2018 |
| The Riders race to the home of the true King of Dragons. But the Flyers are already there, and they soon come face to face with the legendary creature. |
Rivr