Battle of the Planets

Secret Island (1x50)

Air date: Sep 03, 1979

There have been many planes and ships disappearing in the Bermuda Triangle. Mark and Princess are sent to Shipwreck Island in the Triangle to investigate. They discover a Spectra base and their latest weapon, the Whirly Knife. Mark summons the team, but can they stop the latest Mech from Spectra ?