Write a story about a family reunion with a surprising twist. (the family is a mom, dad, oldest daughter, and a son)

The Johnson family had been eagerly anticipating their annual family reunion for months. The excitement was palpable as they packed up their car and set out on the road to the cozy cabin in the mountains where the reunion was being held.

As they arrived, they were greeted with warm hugs and laughter from all their extended family members. The children ran off to play with their cousins, while the adults caught up on each other's lives.

As the sun began to set, the family gathered around a bonfire, roasting marshmallows and reminiscing about fond memories from past reunions. The laughter and joy filled the air, creating a sense of warmth and love that only a family reunion could bring.

Just as they were about to settle in for the night, a sudden knock on the cabin door interrupted the festivities. Confused, the Johnson family opened the door to find a stranger standing on their doorstep.

"Hello, I'm sorry to intrude," the stranger began, "but I believe I may be a long-lost relative of yours."

The family was shocked and speechless. The stranger explained that he had been searching for his birth family for years and had finally tracked them down to this very reunion.

After some initial hesitation, the Johnson family welcomed the stranger, named Mark, with open arms. As they sat around the fire, Mark shared his own stories and memories, seamlessly fitting in with their family dynamic.

The next day, as the family prepared to head back home, Mark made a surprising revelation. He had taken a DNA test, which confirmed his relation to the Johnson family. He was, in fact, the older brother of Olivia, the oldest daughter in the family.

Tears of joy and disbelief flowed as the family realized they had found a piece of their family they never knew was missing. Mark's arrival had brought a new sense of unity and connection to the Johnson family, making their reunion truly unforgettable.

As they said their goodbyes, the Johnson family knew that their annual reunions would never be the same again. With Mark now a part of their family, their bond was stronger than ever, proving that sometimes the most surprising twists can lead to the greatest blessings.