Hunt for the Wilderpeople (2016)

Reclusive country folk Bella and Hector become foster parents to Ricky, a problem child from the city. After some adjustment, things go reasonably well. However, Bella's death means that Hector must now look after Ricky himself, and they haven't been getting along. Moreover, her death causes Child Services to decide to send Ricky back to the orphanage. Ricky refuses to go back and runs away, ultimately sparking a national manhunt for him and Hector.