Ep 9. Bittersweet Sixteen

Jim's best friend Toby is celebrating his "bittersweet" sixteenth birthday, and Jim promises to make it the best one yet. However, things don't quite go according to plan when Jim is distracted by his duties as a Trollhunter and fails to give Toby his gift. Meanwhile, Blinky and AAARRRGGHH!!! accidentally devour a batch of "gummy Koalas," which turns out to be an important ingredient for a potion that can help cure the ailing troll, Vendel. With the clock ticking, the trio must venture to the human world to find a replacement ingredient before Vendel's illness becomes fatal.