Time Machine - The Secret of Leonardo

On the basis of the discovered in Italy design of the great master Leonardo da Vinci, we've managed to build the most incredible machine in the history of mankind – a time machine. The detailed design allowed to accurately recreate it, activate and transfer a dozen or so volunteers into the distant past. Unfortunately, none has returned from this journey...The greatest authorities among the world's constructors suspect that Leonardo probably hid something secret from the world that could reverse the process of teleportation and allow to return in time. As the chosen ones of the secret agency, during a raging storm whose lightning strikes activates the machine, you will be transferred to November 22, 1510, directly to the workshop of Leonardo da Vinci. The Great Master should not be home at this time, but the date setting module can make mistakes, so you can't be sure. Your task will be to discover the secret of Leonard, which will allow you to return to the present times before the vehicle's power generators run out. This may be the most important 90 minutes in world history...