When the factory was first established, a veteran technician emptied his savings to provide wholehearted support. For three years, he worked tirelessly without complaint, and even after retiring, he stayed on at his son's and daughter-in-law's factory to lend a helping hand. But when he left just half an hour early one day, his daughter-in-law demanded a 5,000-yuan fine, while his own son went so far as to force him to apologize to her. After a lifetime of hard work and devoted support, all he received in return was criticism and coercion, finally opening his eyes to his biological son's true nature.