Three generations grappling with a life-changing experience during one day of a vacation in Sintra, Portugal, a historic town known for its dense gardens and fairy-tale villas and palaces.

In a dystopian near future, humanity has been ravaged by a mysterious fungal disease. The afflicted are robbed of all free will and turned into flesh-eating 'hungries'. Humankind's only hope is a small group of hybrid children who crave human...