Spock is a main character in the popular show "Star Trek." He is half Vulcan, half . A Vulcan has no emotions but is extremely and logical. Spock joined the all-human crew of spaceship Enterprise to explore the universe. Spock’s dad, , is Vulcan. He had wanted Spock to attend Vulcan Science Academy and then join Sarek’s research . When Spock left his family to join the , Sarek refused to talk to him anymore.

In episode, representatives from various planets had an emergency . Sarek and Amanda (Spock’s human mom) came aboard Enterprise. Spock said hello to his dad, but ignored him.

The next day, Sarek had a medical problem. He was losing a lot of and needed immediate surgery. Spock was the only on the Enterprise who also had Vulcan blood. though he could die, Spock offered every drop his blood to save his dad. Dr. "Bones" operated on Sarek and saved his life.

The day, when Sarek was told that his son saved his life, he didn’t say thank you Spock. Amanda got very angry with her husband. told him that he should hug Spock and him. Sarek refused. He said that his son the logical thing.

"You don’t thank someone for the logical thing," he told his wife. Spock Amanda that his dad was right, which made even angrier.