Fira is a light-talent fairy who never asks for help. When all the fireflies come down with the no-fire flu, she takes charge. When three brand-new light-talent fairies show up at the same time, she looks after them. And on the night of the full moon, when the mining-talent fairies need someone to light up the underground caves, Fira leads the way.
But all that hard work takes its toll. Fira is tired. Deep in the mining tunnels, her light flickers, then goes out! Will the full moon become Fira's darkest hour?