Due to water damage the whole National Gallery collection is removed from London and stored in an abandoned slate mine inside a Welsh mountain, as it was during the Second World War. Soon after senior curator Quentin Lester is settled in North Wales he unwittingly sets in motion a series of events that wake up this sleepy, charming town. After mistaking local boy Dylan Hughes for an art history genius, Quentin finds himself in the middle of mayhem. (movie-trailer.co.uk)