The top star singer of the Federation, Evelyn, was invited to the border to make a morale-boosting visit but was ambushed by the Zerg, causing her spaceship to crash on the abandoned planet K-17. She was rescued by Ceyrel, the heir of the Vain family who had been exiled. From being at odds to surviving side by side, they gradually built trust while facing Zerg attacks, mine collapses, and fake rescue ambushes.
