Dragons: Riders of Berk Season 8 Episode 5 - A Gruff Seperation Episode Title:A Gruff Seperation.Episode Description:Gruffnut returns to the Edge, insisting that he has changed and is there to run Ruffnut and Tuffnut through the Thorston coming-of-age family trials that will allow them to fully join the family. However, he states that they must compete against each other, as only one can prevail, so they both decide not to compete but Gruffnut convinces them to compete. The first challenge is to collect Speed Stinger venom. Ruffnut is victorious but Tuffnut gets paralysed. The second is to grab 1 moulted Changewing skin. They both appear victorious. The last one is to grab a chest in a series of tunnels that also is a Titanwing Zippleback nest. Ruffnut manages to get the chest while Tuffnut is dragged off by a Zippleback. Ruffnut decides to save Tuffnut instead of completing the final challenge, which Gruffnut reveals was the secret, fourth challenge: putting family above everything else. When he leaves with a seemingly empty chest, the twins' cousin Agnut, reveals that she is there to commence the induction trials (which the twins believe they had already completed with Gruffnut's overlooking said family trials). She reveals that Gruffnut is not a Thorston because he never completed the family trials. On board Gruffnut's ship traveling back to Berk, the chest secretly contains a Dragon Eye lens, though Gruffnut remains ignorant to its significance.