While harvesting bosonite on a barren world, the crew encounters aggressive, genetically-modified tribbles - and the Klingon scientist who created them.

Cast: Rylee Alazraqui, Dee Bradley Baker, Brett Gray, Angus Imrie, Ella Purnell, Jason Mantzoukas, Kate Mulgrew, Robert Beltran, Michaela Dietz, Jorge R. Gutiérrez, Bonnie Gordon