Margot Cleverly waited until the last bell before she pulled the crate of copper wire from under her desk. The Riverbend Prep showcase was six weeks away, and her students had won nothing in four years. She meant to change that. Not with the school's blessing, and not with the principal's budget. She had found a place off the grounds, a small wooden cabin near the reservoir, and she planned to turn it into a workshop where her students could build the kind of machines that made rival schools go quiet. She was locking her cabinet when the door creaked open behind her. "Still here, Margot?" It was Hollis from the science wing. He carried a clipboard he never seemed to write on, and he had a habit of counting the cars left in the staff lot. He looked at the crate at her feet. He looked at the roll of blueprints under her arm. "Grading," Margot said. "With wire?" She smiled the way she smiled at parents. "Robotics club inventory. You know how the district is about receipts." Hollis stepped closer. He nudged the crate with his shoe. "Odd hour for inventory. Third night this week, isn't it?" Margot's pulse jumped. If he mentioned any of this to the principal, her cabin plan was finished before the first bench was built. She needed him uncurious by morning. She let her shoulders drop. "Alright. You caught me." His eyebrows lifted. "I've been hiding this in my car for a week." She reached into her tote and lifted out the bottle she had bought that afternoon, deep red glass, a quiet label. "It's for your retirement dinner. I was going to wrap it. Now it's just awkward." Hollis blinked at the bottle. His mouth opened, closed. "Please don't tell the others," Margot said. "I wanted mine to be the good one." He took the bottle with both hands. The clipboard sagged against his hip. "Margot. That's — thank you." "The wire really is inventory," she added, laughing a little. "Boring truth." "Of course. Of course." He was already backing toward the door, cradling the bottle like an infant. "Go home. Get some sleep." She listened to his footsteps fade down the hall. Then she locked the classroom, loaded the crate into her trunk, and drove the back road out to the reservoir. The cabin sat where she had left it, shingled roof, small porch, a lantern still burning by the door from her last visit. A hand-painted welcome sign swung on a chain above the step, left by whoever had owned the place before. Margot set the crate down on the porch and unrolled her blueprints against the railing. She had bought herself a week, maybe two. Hollis would drink the wine and remember he was flattered. But he would also remember he had been curious, and eventually he would wonder why. She had to build fast.

Nine days after the wine, Hollis stopped Margot in the hallway. He held his clipboard the old way, tight against his chest. He asked if she had a minute after school. She said yes and felt the countdown snap tight in her chest. She had two benches built at the cabin and no working prototype. If he walked into the principal's office tomorrow, none of it would matter. She spent lunch thinking. A denial would not hold. A second gift would look like a bribe. She needed to give him a story he could follow to the end and find nothing. After the last bell she caught him by the staff lot. She kept her voice low, like she was ashamed. "You were right the other night," she said. "The wire isn't inventory. I've been helping a friend fix up a place he bought. Off the books. I didn't want the district asking why I was hauling supplies." Hollis's eyebrows moved. "A place." "A pub garden out past the county line. He's reopening it. I told him I'd wire the string lights along the pergola." She pulled out her phone and showed him a photo she had saved that morning, a timbered building with lanterns and flower boxes crowding the porch. "He's paying me in weekends there. That's all." "Show me," Hollis said. She had counted on that. She drove him herself, forty minutes out. The pub was real. She had eaten there once. The owner did not know her name, but the barrels and fairy lights matched her photo, and a coil of copper wire sat in her trunk as proof. She parked where Hollis could see the pergola. She waved at a man stacking crates and he waved back the way country people wave at anyone. Hollis watched for a long time. He drank a cider. He asked what she was being paid. She named a small number. He nodded. On the drive home he was quiet. Then he said, "You should have just told me." "I know." "District would've written you up for the second job. Not worth it." "I know." He got out at the staff lot and tapped the roof of her car twice. "Forget I asked." She drove straight to the cabin. The lantern was burning. A turtle sat on the low step by the door, patient as furniture, and she stepped around it. She unrolled the blueprints on the porch rail and let her hands shake for one full minute. She had bought more than a week this time. She had bought the rest of the build, if she was careful. But she had also given Hollis a place he could drive to and a friend he could ask about. If he ever went back without her, the story would fall apart in one conversation. She picked up the pencil. Six weeks. Now the real work.

The next morning Margot drove out to the cabin before school. She stood in the main room and looked at what she had: two workbenches, a coil of copper wire, blueprints pinned to the wall, and no way to run a single motor. Her students were coming in three weeks. Dead tools would waste the whole build. She needed power, and she could not run a line from the road without a permit and a name on paper. She made a list on the back of an envelope. Solar was too slow and too visible on the roof. A gas generator would idle loud enough to carry across the reservoir. That left the creek behind the cabin. It ran fast all summer. She had taught the water wheel unit for six years. She could build one in a weekend if she had the parts. The parts were the problem. A used marine alternator, a deep-cycle battery, an inverter, pipe, bearings. Too much to charge to the school. Too much to buy in town without someone noticing. She drove two counties over to an estate sale posted online. The house was a bright coastal place with wide porches and faded shutters. A tiered planter of herbs sat by the steps, tagged three dollars. Inside, a widow was selling her husband's shop. Margot found the alternator in a milk crate under a bench. She found the battery beside it. She paid cash and asked no questions and the widow asked none back. She worked at the cabin through Saturday and into Sunday. She dammed a narrow point in the creek with stones and a sheet of plywood. She mounted the wheel on a shaft cut from old pipe. She wired the alternator through a regulator to the battery, then the battery to the inverter. Her hands cramped. She skipped lunch. A pale elk stepped out of the trees at dusk and watched her from across the water, then moved on. At sundown Monday she flipped the switch on the inverter. The meter jumped. She plugged in a bench lamp. It came on steady. She plugged in the drill press. It spun up clean and held its speed. She sat down on the floor and laughed once, hard. She walked down to check the intake before dark. The creek had cut wider around her dam already. On the far bank, half in the shallows, a river crocodile lay watching the wheel turn. She had never seen one this far up. It did not move. She backed away slowly and climbed to the cabin. She had power. She also had a dam that changed the water, and something downstream had noticed. Come morning she would need to reinforce the intake before the creek tore it out, and she would need to decide what to do about the animal that had claimed her tailrace.