Fishlegs and Meatlug, his dragon, have been slowing the others down lately, eventually leading them to lose an Outcast ship, as it outran their dragons. This leads everyone to agree to Fishlegs not going with them on their adventures. Fishlegs and Meatlug, in their sadness, start obsessively overeating; Fishlegs on berries and Meatlug on rocks. These rocks cause Meatlug to produce more lava than ever that can create the greatest of metals. Berk obsesses over this new metal and Fishlegs and Meatlug become popular. But, soon they realise that the rocks have magnetic properties that causes Meatlug himself to become magnetic. Havoc ensues.
Another Fishlegs-centric episode, one that I much prefer over the last one in season one. It's quite a simple story that has nothing on the overall plot, besides a brief scene continuing from the last cliffhanger. It was great to get to know Fishlegs and Meatlug more; I'm growing to really love them two. Obviously not as much as Hiccup and Toothless though. I especially loved the scene with Fishlegs riding Toothless, as he is not used to it and Toothless being so sure of himself is quite fun to watch, just like when Snotlout had to ride him last season.
Not a great episode, but certainly good and fun to watch.