As torrential rain and pest infestations threaten Yunling, model aircraft coach Ling Feng leads a team into the mountains, determined to use modified drones to carry out emergency aerial spraying across 500 mu of cliffside terraced fields. Facing obstruction from the conservative farmer Uncle Chen Gen, who demands a strict written guarantee, malicious provocations and contract-stealing attempts from rival Lei Tianming, treacherous cliffside turbulence, and a sudden hand injury, the rescue operation encounters one setback after another. With an extremely narrow window of opportunity, Ling Feng resolutely takes on the harsh weather and challenging terrain, fighting an all-out aerial-spraying battle to protect the fruit orchards covering the mountains.