Reaching Panthara IV after an asteroid wreaks havoc of catastrophic proportions, the Enterprise crew deals with trying to save the planet as well as deal with someone who claims to be a historian from the future.
Geordi can barely curtail his enthusiasm at being able to test out a new theory of transportation, as Worf's mother boards the Enterprise with his son and news that Worf's Earthly parents can no longer care for him.
Transporting three Ullian mind-probing historians, the Enterprise crew is stymied when some of its members fall into a coma. Deanna Troi, the first crew member to come through it, cannot recall anything surrounding the incident.
While aiding an androgynous race who lost a couple of members in an unmapped region of space, Riker falls for one of them, which can lead to trouble if detected, since the alien race does not endorse gender specificity.
The Enterprise finds a lone Borg drone, separated from the collective, and brings him aboard. The drone begins to reassert his individuality, but his presence causes differing levels of fear and sympathy from various crew members.
A transporter malfunction, combined with a Romulan ship under stress and a damaged cloaking device, creates the illusion that Ensign Ro and Geordi are dead, but Geordi doesn't believe it to be so, and he acts accordingly.