In an alternate reality, children learn how lucky they will be (their "frequency"), knowledge which shapes their destiny. The unluckiest boy must parse the mysteries of free will in order to pursue his forbidden love of the luckie...

A look at the lives of two teenage girls - inseparable friends Ginger and Rosa -- growing up in 1960s London as the Cuban Missile Crisis looms, and the pivotal event that comes to redefine their relationship.