Vincent Freeman is conceived without the aid of genetic selection; his genetic profile indicates a high probability of several disorders and an estimated lifespan of 30.2 years. His parents, regretting their decision, use genetic selection in conceiving their second child, Anton Jr. Growing up, the two brothers often play a game of "chicken" by swimming out to sea as far as they can, with the first one returning to shore considered the loser. Vincent always loses. Vincent dreams of a career in space travel but is always reminded of his genetic inferiority. One day, Vincent challenges Anton to a game of chicken and beats him. Anton starts to drown and is saved by Vincent. Shortly after, Vincent leaves home.