But he was still in trouble.

The Plugger poured merrily through the blasted lock, into the room. Hellman tried a practice shot on it, but the Plugger was evidently impervious ... as, he realized, a good plugger should be.

It was showing no signs of fatigue.

Hellman hurried to the far wall. The door was locked, as the others had been, so he burned out the lock and went through.

How far could the glob expand? How much was two cubic vims? Two cubic miles, perhaps? For all he knew, the Plugger was used to repair faults in the crusts of planets.

In the next room, Hellman stopped to catch his breath. He remembered that the building was circular. He would burn his way through the remaining doors and join Casker. They would burn their way outside and....

Casker didn't have a burner!

Hellman turned white with shock. Casker had made it into the room on the right, because they had burned it open earlier. The Plugger was undoubtedly oozing into that room, through the shattered lock ... and Casker couldn't get out! The Plugger was on his left, a locked door on his right!

Rallying his remaining strength, Hellman began to run. Boxes seemed to get in his way purposefully, tripping him, slowing him down. He blasted the next door and hurried on to the next. And the next. And the next.

The Plugger couldn't expand completely into Casker's room!

Or could it?

The wedge-shaped rooms, each a segment of a circle, seemed to stretch before him forever, a jumbled montage of locked doors, alien goods, more doors, more goods. Hellman fell over a crate, got to his feet and fell again. He had reached the limit of his strength, and passed it. But Casker was his friend.

Besides, without a pilot, he'd never get off the place.

Hellman struggled through two more rooms on trembling legs and then collapsed in front of a third.

"Is that you, Hellman?" he heard Casker ask, from the other side of the door.

"You all right?" Hellman managed to gasp.

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