An uncharted star cluster the Enterprise was mapping in 2366 when it found a crashed escape pod and its gravely injured, amnesiac survivor on one of the planets.
The Zeta Gelis Cluster is the setting of the Next Generation episode Transfigurations. During a routine survey the ship picks up a distress signal from a wrecked pod on a planet in the cluster. Doctor Crusher keeps the dying occupant alive by linking his nervous system to Geordi La Forge's during transport.
The patient, nicknamed John Doe, heals at an extraordinary rate, remembers nothing, and gives off energy surges that grow stronger each day. La Forge and Data work on a damaged storage device from the pod to learn where he came from.
Its star chart leads to a Zalkonian warship, whose captain Sunad demands the return of a condemned fugitive. John turns out to be among the first of his people to evolve into a being of pure energy.