Stardate 9833.3. Lyonesse finds another long-dead Vulcan outpost on an ice-age world harbouring the remains of an ancient civilisation. Once a landing party begins exploring the ruins, they discover something is still alive.
Stardate 9828.3. The crew of Lyonesse continues delving into the mysteries of BC-01c, and makes first contact with an intelligent lifeform within the Cluster.