Hoshi thinks she is to blame for a series of misunderstandings that sent a group of visiting aliens off the Enterprise in a huff. As the Kreetassans depart, a strange, symbiotic alien creature boards Enterprise capturing a few crew members, including Archer and Trip. This unidentifiable parasite cocoons them in its web, feeding off their bodies to survive. With the captured crewmembers' lives in jeopardy, an insecure Hoshi, under T'Pol's command, faces her biggest challenge by finding a way to communicate with the lifeform and persuade it to return to its home planet.

When Archer and Trip repair a vessel belonging to an alien leader, the Earthmen are repaid with an invitation to their new friend's volatile world.