Cast Out, Part 1

S2, E19: Fed up with Snotlout's disrespect, Hiccup suspends him from the academy. When Snotlout leaves Berk, he encounters both the Screaming Death, and Alvin! The Outcast is brought back to Berk, but his motives are unclear. On top of it all, Dagur unleashes a plan that could wipe out the academy dragons.