Scientists and sci-fi writers explore a hypothetical first-contact event between aliens and humans.

When a university student moves in with a family in Mexico City, conflicts emerge. An inevitable affaire with the father, a rebellious bond with the adolescent daughter and tensions with the mother lead up to a painful secret that will shake the family apart.

A young widower is deported as his daughter is scheduled for a heart transplant, this will lead him to orchestrate the boldest border crossing plan in history.