Voyager comes across a previously unseen phenomena in space, and Tom becomes trapped inside it. The Doctor attempts to experience a home life by creating a holographic family. B'ellana helps him make them more real after meeting them and seeing they are far too perfect.

Strange aliens replace Voyager's crew members one by one and claim not to know why they are there. The transplanted crew members arrive in an idyllic world. The aliens take over Voyager when enough are aboard, and Janeway scrambles to retake it.