Just days before his Make-A-Wish dream was going to come true, this teen was shot and killed

A Texas teen battling bone cancer was killed by a 15-year-old just days before he was set to see his Make-A-Wish dream come true.

Diego Rodriguez, 17, was fatally shot Tuesday by a teenage boy playing with a handgun, the San Antonio Express-News reported.

The gun went off when Rodriguez tried to take the weapon from the younger boy, police said.

At the time of his death, the San Antonio teen had one wish.

He’d been battling bone cancer for two years and just wanted to live to see his grandfather’s truck redone by the Black Jack Speed Shop owned by retired NBA All-Star Tim Duncan.

The 23-year-old old Chevy S10 was probably only worth $1,500 — and the restoration may have cost $15,000. But the Make-A-Wish Foundation was willing to help.

As soon as the nonprofit approached Black Jack about pitching in, they said yes.

“I was excited to bring some joy to a young man who was down for the better part of his earlier years,” Pena told Inside Edition.

Getting the truck work done was part of a birthday promise from the boy's mom.

"She had promised Diego if he can fight the cancer and make it to his 16th birthday that she would give him the truck," Pena told KENS.

But Rodriguez didn’t live to see the completed product.