It was a dark night in Mystic Falls, Virginia as Katherine Pierce fought over the wheel with Jeremy.
Suddenly, the car went off the Whickery bridge and her head hit the windshield. Then everything went black. Jeremy was fine though, and left.
Damon was walking across the bridge, when he saw the car below the water with Katherine in it, so he dove in to save her.
Once he had layed her gently down on the Whickery bridge, he looked down at her and assessed her condition. He could tell that she was still alive, but had a head injury and some scratches. She was wet, pale, and cold from the water too.
He gently pulled her into his arms and walked home with her in his arms.
When she woke up, she was in Damon's bed in a pair of her own dry clothes, Damon seated on her bedside.
"Thanks," she said.
"You're welcome," he replied.
They smiled at each other.