A teenager put his life on the line Tuesday to save a driver who plunged into a Michigan lake.

John Agnello, 15, was fishing with his mother near the Lake Saint Clair marina when he watched the car soar into the water.

“I just see a car just go flying in the air. It was about 15 yards into the water, already that far,” Agnello told WLIX 10.

The quick-thinking teen and another man jumped into the water and made a beeline for the car — which was rapidly sinking below the surface and trapping the woman inside.

The water pressure on the car door kept the duo from opening it.

Instead, they were able to instruct her to lower her windows before they dropped below the surface, leaving just enough time for them to pull her out.

After Agnello and the other unidentified hero brought the woman to shore, the determined teen climbed into the submerged car to make sure no one else was trapped inside.

“The only part that kind of scared me was I was under the water inside the car because I was feeling around in there. It kind of got hard to get out, but everything was fine,” Agnello recalled.

Fortunately, the car was empty.

Police said the driver was taken to a local hospital.

What caused the crash is still under investigation, St. Clair Shores police said.

As for Agnello, he is trying not to let his heroism go to his head.

“I think that’s just how my family raised me, just to take action and all that stuff,” he said.