Professor Norman Wedgwood and his team are planning another rocket mission to the Moon. Once again, Geoff, Valerie and Jimmy are on hand to witness the launch of a new rocket MR1, along with journalist friend Conway Henderson. However, when the automatic supply ship MR2 fails to launch Henderson and the children make a desperate rescue attempt with Jimmy's pet Hamlet.
Peter Williams
Harold Goldblatt
Gerald Flood
Stewart Guidotti
Gillian Ferguson
