Frost

The end of the world as they knew it had come and gone, and the remnants of mankind struggle to survive in a barren landscape. Twenty-three-year-old Finn sets out on a desperate mission to scavenge for the much-needed medicine to help his sister. He knows better than to trust anyone, but when a total stranger saves him from a vicious gang, the unexpected act of kindness rekindles Finn's lost faith in humanity.
The tentative friendship with his rescuer, Spencer, gradually turns into something more, and for the first time in years, Finn lets himself yearn for joy and hope in the dead of nuclear winter-right until Spencer goes missing. They say love is the greatest power of all, but it seems it would take nothing short of a miracle to overcome the dangers that threaten to destroy Finn's only chance for happiness and the lives of his loved ones.