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On the planet Vulcan, Spock was trying to get of his emotions. As he looked up in the sky, his thoughts came to his son, Zar.
He was created when he has sex with his mother. He didn’t know it at the time, but he left his seed inside the body of his mother. Zar came out of his mother’s body after 9 months. It wasn’t until years later, that he learn that he had a child. He and James Kirk used the Guardian Of Forever to rescue him and his mother from the past. When they got there, Spock found a teenager, and that his mother is dead. They brought Zar to their time, and Spock decided to teach Zar how to be a Vulcan. It wasn’t easy and got harder to do when Zar learn how his father lost control and has sex with his mother. Spock has to explain what being a Vulcan bastard mean. While looking though the files from his home planet, he learned what his future going to be. After helping Spock solving a crisis, Zar has to return to his home planet. He told Spock that he left records on his home planet that told him why he must return to his home planet. After Zar left Spock’s home time though the Guardian Of Forever, Spock found the proof that Zar talked about. It was a painting of a young Vulcan giving the Vulcan hand greeting. Spock hasn’t seen him since.
Spock’s mind returned to the present. He still hasn’t gotten over losing his son to the past. It was one of the reasons why he wanted to get rid of his emotions. We know that he will fail to do so in the first Star Trek movie, but that is for another story for another time. The end, for now.