In 1930's New York City, two unlikely paths cross on a crowded street. When fiery 15 year old Serafina Romano meets struggling 16 year old Poppy Ryan, a powerful friendship with cloudy boundaries is born. A girl who has never taken no for an answer, Serafina comes from a dark family with strong ties in dangerous places. Poppy Ryan, a girl who has lost everything, is hungry for a better life. In each other, the girls find strength to address their futures and their pasts, but life is dangerous and complicated in the city. Will the two be strong enough to face life together? Or will everything fall apart?