On this, the first of their many magical nighttime adventures together, Grooty and Katie end up in a place where Katie discovers that while there, she has all of her previous health and energy, but it's not the only thing to be discovered, because while she and Grooty are having fun exploring, they startle a ver MEAN TROLL who just wants to be left alone! Lucky for THIS Troll, these two friends know the value of friendship and they just might be able to stop a Troll-size temper tantrum before somebody gets hurt!