The destinies of two families are irrevocably tied together after a cyclist is hit off the road by a jeep in the night before Christmas Eve.

A teenager, named Matteo, dreams of becoming a professional swimmer. When his coach prefers to him the son of the team's sponsors, Matteo takes revenge studying at the university Bocconi and inventing a social network.

In this rom-com challenging the concept of soulmates, parallel storylines portray four single friends as they pair up in different couple combinations.