Sucker

Set in a mysterious dark forest inhabited by luminescent slug-like creatures, our protagonist feels disgust over the community's habit of consuming rotten plants. Driven by a refusal to conform, he decides to abandon communal life, causing his own glow to dim. However when he stumbles upon a dying slug deep within the forest, he can't resist his craving for it's fading light and he extracts it out of the body. But the euphoria and heightened glow he experiences are short-lived which leads to unexpected consequences...