Disclaimer: I don't own The O.C.
Prologue
John Cohen abandoned his wife and three children in 1972. Diane was ten, Eric was eight, and Sandy was six. He couldn't handle a father.
Sandy became a father in 1988 to Seth Ezekiel Cohen. He became a father again in 2003 to Ryan Matthew Atwood, who eventually became Ryan Matthew Cohen. In 2007, he became a father for a third and final time to Sophie Rose Cohen. Sandy was a great father to his three children, unlike John Cohen.
Diane married her husband in 1986. They left New York for Pennsylvania. Diane and her husband had kids in 1987, 1989, 1990, 1992, and 1994.
Eric Cohen married his wife in 1988. Eric and his wife moved to Boston. They had kids in 1991, 1993, 1996, and 1999.
Sophie Eva Cohen adored her twelve grandchildren. By 2008, she hadn't talked to her ex-husband in thirty-six years. All twelve of Sophie's grandkids knew John Cohen as that "idiot who abandoned The Nana."
By 2015, things had changed drastically for everyone.
Seth was married to high school sweetheart, Summer Roberts. Seth and Summer Cohen were expecting their second child in February 2016. Summer was five months pregnant. Seth and Summer had a seven month old daughter named Victoria Kirsten Cohen. Summer was pregnant with another girl. Summer had become pregnant with Victoria on her and Seth's honeymoon.
Ryan was married to Taylor Townsend. Ryan and Taylor had married in Summer's eighth month of pregnancy with Victoria. Unknown to them, Taylor was two months pregnant. The couple now had a six month old son named Sanford Ezekiel Cohen. He had been nicknamed Ford. Taylor was three months pregnant with twins.
Julie Cooper-Nichol was now Julie Cooper-Nichol-Atwood-Bullit. On November 28th, 2007, Julie had given birth to a son that was named Seger Dylan O'Connor-Atwood. O'Connor had been Julie's maiden name, and she wanted her song to have it. Seger was soon quickly nicknamed Dylan, but half-siblings Kaitlin and Ryan referred to him by his first name. Julie had married Frank in 2010. Their marriage had only lasted thirteen months before a drunk Frank came home and went after his way. Julie had bought the house next to Sandy and Kirsten in 2008. She had brought Kaitlin and Dylan with her. Three year old Dylan was told to go get help from Aunt Kirsten and Uncle Sandy. Kirsten called the police and comforted the hysterical little boy when Sandy went over and knocked Frank out until the police arrived.
Julie had pressed charges against her husband and divorced him. Frank was now in jail for five years. In 2013, Julie had married ex-fiancé Gordon Bullit. They were happily married, and Gordon had adopted Dylan. His full name was now Seger Dylan O'Connor-Bullit.
Things were going badly for John Cohen. He had just been diagnosed with cancer, and was going to die. His new wife called Sophie, who in turn called her three children.
John's children, grandchildren, and great-grandchildren were flying out to South Carolina to say their final good-byes. Julie and Kaitlin were going for moral support. Dylan was going to stay with Bullit.
Sandy didn't want to see his father, but Kirsten was forcing him to.
Things were about to get very bad for Sandy Cohen.
TBC
I came up with this idea awhile go. How would Sandy react if he met the father who abandoned him years ago? And I decided to go with the fact that John was dying.