I'm Mortal (2015)

In the near future, Dr.Angela Lensor has catapulted herself to fame with the invention of a medication that enables immortality. The vaccination must be taken before a human develops past the age of three. Our story takes place on her son's third birthday, the day the medication is made available to the public. He is to be the first human to receive the vaccination to death by age, but amidst his elaborate birthday celebrations, Angela panics about the ethical side of her invention. Her and her husband are in disagreement and must decide what to do for their son.