A pulsar threatens a planet that at first seems empty until the crew of the U.S.S. TITAN finds out, that its surface is protected by a slowly failing artifical magnetic field. While waiting for another ship that is supposed to exchange the Andoran crew-members for some that are politically less in doubt after Andors secession from the Federation Cpt. Riker and his crew look for ways to find out more about this planet and ways to keep "their" Andorans on board. Both seems to be impossible.
While the problems around the pulsar belong to one aspect of the continuing TITAN-story, the Andoran troubles - which are made worse by the arrival of an Andoran battle-cruiser - are part of the broader ST-story at the moment and is metphorically linked to the persecution of Japanese nationals and descendants in the wake of the attack on Pearl Harbour.
Interesting and complex continuation - but be warned. There is more than one cliffhanger here.