Captain America (2013)

Arnim Zola's ambitions leave Captain America stranded in the upside-down territory known as Dimension Z. With no country and no allies, what's left for the Sentinel of Liberty to protect? Just the one thing his foe values most: Zola's son! Steve has saved the boy's life, but can he keep him alive against the savage barbarians of Phrox...with the fate of a world hinging on his victory?