Alienation(2014)

Alienation, is a coming of age story set in post-apocalyptic Australia after an alien invasion. Lorne, 35, wanders the desolate landscape, alone after the death of his son. On his travels, he encounters Finn, a brave 10-year-old boy who shapes his life and journey. The two boys bond and grow together, becoming companions and role models for each other in this isolated world.