Bennie Barrier returns in another Big City Adventure. On a quiet Sunday morning, Bennie Barrier and his friends, Chester Cone and Carlos Cone stroll into the city only to find the High Street lined with striking shop workers. From Bradley and Barnaby Bollard to Tilly Trolley and the mischievious Bonzo and Boomer Bin, everyone's out on the benches, demanding fair pay from Yuri and the shopping centre's managers. As tensions rise, a loud crash echoes through the air - part of the shopping centre is crumbling! Bennie discovers a delivery lorry has crashed into a critical pillar in the deserted car park below, with no staff to guide it. Can Bennie and his friends save the day before the centre collapses?