Little Red Tractor S02 E06 Paperchase

Walter, Ryan, Amy, Thomas and Leo go missing while playing a paperchase game devised by Stan. When it's revealed that Mr Jones may have hoovered up the paper by mistake, it's clear that a search party needs to be sent out. As the night gets darker, and with few clues to follow, Stan and Little Red Tractor have a hard task finding Walter and the lost children.