Use the excerpt to answer the question.

Now Lana steered the little boat toward the dock by the hut where Martin lived with his two little brothers. When she saw Martin wasn’t waiting out in front, she heaved out a sigh, yelling, “C’mon, Martin! We need to go—now!”

“All right, all right.” Martin appeared, lugging an empty box. “Listen, I had a thought. You know how I’ve been talking about how these fuel runs are a dead end?”

“You’re backing out on us now?” said Jessie.

“No, no—but while we’re inland, I want to scavenge for a few other things.” Smiling, Martin jumped into the boat. “I have a plan.”

In one to two sentences, describe a theme of the excerpt.