Czech tourist Láďa found a suitcase containing 22 rolls of undeveloped film in a Swedish dumpster. When developed, the negatives produced 756 snapshots of unknown Chinese tourists. We decided to search for those people based on their lost photos in a world where every fourth person is Chinese. At the end of the journey tracing the unknown Asians footsteps, our crew finds itself in the Middle Kingdom and our story becomes a part of the Chinese TV industry. The documentary detective story Lost Holiday is a film about travel, photos, and identity in an interconnected world, about memory and the importance of treasuring images, about Czechs, Europeans, and Chinese.