A J'naii shuttlecraft that vanished into a pocket of null space in 2368, prompting the J'naii to ask the Enterprise for help in finding and rescuing its crew.
The Taris Murn is a shuttle belonging to the J'naii, an androgynous species. In the episode The Outcast, set in 2368, it disappears without trace inside the J'naii system and the Enterprise is asked to help look for it.
The search shows that the shuttle has fallen into null space, a pocket that drains energy and cannot be seen from outside. William Riker and the J'naii pilot Soren chart the pocket and then fly the Enterprise shuttlecraft Magellan into it.
They find the Taris Murn with its two crew barely alive and beam them to safety as their own shuttle loses power. The work brings Riker and Soren close, which leads to the episode's central conflict.