Exiles (Star Trek: The Next Generation, No. 14)

For three centuries the people of Alaj and the people of Etolos have been bitter enemies. However, when crippling disasters strike both worlds, each planet becomes the other's hope for survival.

With time running out, Captain Picard and his crew are called to negotiate a peaceful settlement and begin rescue efforts. But some factions would rather see both planets perish and will stop at nothing to prevent peace.

Soon the U.S.S. Enterprise™ crew is caught up in a web of intrigue and terrorism that culminates with an act of ultimate revenge against bother peoples -- revenge that will meant he destruction of two worlds and the U.S.S. Enterprise.