Zeitreise [Time Travel]

It is well known that buying lost and found items is fun, especially if you do not know the contents. It is even more exciting to find a device in a suitcase that enables time travel. Unfortunately, it is not controllable and whirls you into the Stone Age, into ancient Egypt, into the Middle Ages, right up into space. The energy of the time machine will soon run out. Can you go back in time?