Neutrinos go right through everything and are therefore difficult to detect. Scientists have come up with something to bring these ghost particles to light anyway. In Japan, 1000 metres underground in a former mine, they built the Super-Kamiokande. A gigantic vat of pure water with 11,000 detectors. Filmmakers Hannie van den Bergh and Jan van den Berg filmed Super-K and spoke to scientists and villagers. While the residents mainly have their eyes on the visible mountains, trees and animals, the scientists look at invisible neutrinos, hoping to unravel the origin of the universe.