Max and Sasha ran down the stairs as fast as they could.

“Are you sure the builders will be able to stop Pitt?” asked Max.

“Of course!” said Sasha. “And even if they don’t, the girls have moved on to plan B, remember? All we have to do is find that trash bag!”

They followed Joy’s directions until they reached the basement of the Pitt Building. At the end was a single door, labeled WASTE DISPOSAL.

“That’s it!” said Sasha. “We just need to find the bag in there and—”

They threw open the door…and stopped. The room was filled from floor to ceiling with black trash bags piled up in great tumbling heaps. It hadn’t been emptied for weeks.

“Which bag is it?” said Max, looking around frantically.

Sasha shook his head. “I—I don’t know! But it’s got to be one of them…right?”

Max stared out across the sea of bags. There was no way of knowing which was the correct one. And even if they did find the right bag in time, what if they were already too late?

“Oh, Luke,” Max whispered, “where are you?”