On the outskirts of Duvi and Shmuelly’s neighborhood is an empty building that is in the middle of construction. For years, the building has been abandoned. Some say the contractor went bankrupt. Others claim that there is a dispute over the ownership of the land. But no one fathomed that deep in the ground, hidden under the building was a top secret-

Sorry, we can’t tell you! You’ll have to come join this fast-paced adventure yourself. Then you’ll discover what is hiding in the depths of that abandoned building, who is behind it, and exactly what two regular kids like you have to do with all this secret stuff…

SO WHAT ARE YOU WAITING FOR? LET’S GO!