A boundary hit results in the ball ending up on an adjacent disused railway line. While searching for the ball they find an old rocking horse: the head is missing and someone has hidden a large amount of cash in it.
They explore the rest of the tunnel. When they emerge at the other end they discover that the supermarket they know ought to be there has disappeared, and what they see is a rail yard filled with steam locomotives.
Somehow they have landed in 1941, and the country is at war. Back in 'their' time the robbers who hid the money are now searching for it. They know the boys have found it, but don't know how they managed to escape: for them, the end of the tunnel leads only to the supermarket car park, as it should.
Their boss (the meanest villain in Liverpool) isn't pleased. They return to Springfield Park as this is the only chance they have of finding the boys and the cash. The boys realise the tunnel is their only way back 'home', and both parties meet once more ...
Available to order from our shop