Tyler Opdyke found the money while he was passing Melissa Vang's house.
Her husband had dropped the wallet on the way to his car.
It was filled with $1,500 cash, meant for a shopping trip.
But Tyler didn't take a dime. And when no one answered the door, he left the money, under the mat.
"I just really thought what would I want someone to do. I thought of the house, the family that lived there," he said.
The video of Opdyke's good deed has gone viral.
He was later given a $150 dollar reward.