In the cold and isolated forest, a mycelial network waits for its next meal. But when a new alien being, an 'Upright' collapses into the hyphae, the network consumes more than it bargained for. Its mind poisoned with Upright thoughts, the One becomes Two, splintering into a new, ambitious personality.

The fungus has discovered the concept of individuality, and this will have disastrous consequences.