Lin Chen returns to his hometown with his younger brother, Lin Yu, and uses drone technology to help local farmers. Just after the two use a drone to extinguish a fire in a wheat field, Zhao Qiang files a complaint against them for allegedly trespassing on farmland. With his father's advice to hold back, Lin Chen has no choice but to endure the injustice for the time being. Later, Lin Chen and Lin Yu use drone surveillance to detect an impending locust plague. Although they warn everyone out of goodwill, Zhao Qiang's instigation and the villagers' conservative attitudes leave them unwilling to believe the warning. Only Uncle Zhou, an experienced farmer, supports them. When the locust plague arrives as predicted, the villagers deeply regret ignoring the warning and turn to the brothers for help. Putting past grievances aside, Lin Chen works day and night, even staying up all night to repair a drone, and ultimately succeeds in protecting everyone's crops.