Looking back at home movies of herself riding horses with her father, Christopher Reeve's daughter Alexandra Reeve remembers a cascade of magical moments.
"We grew up doing, I think, every physical activity known to man," said Alexandra, now 23 years old. "We sailed, we rode horses, and it was just a huge part of who he was as a person, and what we did as a family."
But Alexandra almost lost her beloved father on May 27, 1995, after he fell from his horse and became paralyzed from the shoulders down. Alexandra was 11.
Alexandra said the family had to figure out new ways of being together after her father's accident.
Matthew Reeve, Alexandra's brother and Christopher's son, was 15 years old on the day of the accident.
"He knew what he wanted to get done," Matthew said. "He had this focus, drive and determination."
Alexandra and Matthew grew up with a man the world saw as Superman. They came to realize just how appropriate the image was, not just in the days when it seemed he could do anything, but during the 10 years he lived in his wheelchair.
"He didn't want the role to define him," said Alexandra. "But he realized it did create a powerful icon to people, and the difference between a physical Superman, and then the strength that comes afterwards, is a powerful one, and he realized that if that sent a message of hope to people, then so be it."
It is a message they want to spread, and so, they agreed to a rare interview with "Nightline." Matthew, now 27, is a documentary filmmaker, and Alexandra, 23, is in her final year of law school. And while we have caught glimpses of them over the years, they have rarely spoken in public, and their British accents are a surprise.
"They're not — it's not fake," said Matthew, laughing. His sister added, "We were raised in England, and went to school over there, then grew up coming back and forth between England and America."
It was while at home in England with their mother, Gae Exton, that they first heard about the accident from their stepmother, Dana.
"[We] got a phone call from Dana very early in the morning," said Matthew. "Then we were on a plane later that day. [We] just didn't quite know what to expect."
They arrived to find their father was in dire condition, suspended between life and death, with no movement or sensation below his shoulders.
Five months after the accident, while still in rehab, Christopher Reeve sat down with my colleague Barbara Walters and talked about those first painful days, how he even thought of ending it all, until his family came into his hospital room.
"The minute they all came in, and I could see the love, and feel the love, and know that we're still a family, and that we're great," Reeve told Walters.
Alexandra remembers that moment. "I think anybody in that situation deals with doubts and with fears like that. You know, you're in this new universe, and just don't know what it's going to be, and your life is changed so fundamentally. But really, for Dad, that moment was just a moment, and then it was the instant realization that … he still had us around, so we needed him, and we wanted him to be there."
Five years after the accident, Matthew decided to document his father's journey — recording the victories, the painful setbacks and the humor.