After a century of silence, the Enterprise receives a message from the Shelia system informing them that they have discovered a human colony on a world in their sector. As they will be colonizing the planet themselves in four days time, they want the Enterprise to evacuate all humans from their territory. The planet in question is in a high radiation zone and no one can understand how any human could be living there. As Data is immune to the radiation he is sent to the planet to arrange for the inhabitants departure. Once there however, he finds there is a population of 15,000 and is informed they have no intention of leaving. While Picard must find a way to get the Sheliak more time, Data enlists the help of one of the locals in his attempt to convince them to leave.