United Kingdom, Aug. 20 -- Kirsten Dunst's son had a serious health scare while she was filming in Budapest.

The 43-year-old actress and her husband Jesse Plemons had initially rented a house in the city with their sons Ennis, seven, and James, four, while she was filming The Entertainment System Is Down, but their plans had to change when their youngest boy fell very ill.

While Kirsten declined to share any details but stressed everyone is fine now, Jesse, 37, and the boys returned to Los Angeles, leaving the Virgin Suicides star alone in Budapest for months, a situation she compared to the movie Final Destination.

She explained to Town and Country magazine: "Where you're imagining all the things that could go wrong, worst case scenar...