Watch Captain Scarlet Season HD Full Free on solarmovie.do. Watch Captain Scarlet tv series online free. In 2068, after mankind mistakenly starts a war with the Mysterons from Mars, it's up to Spectrum and...In 2068, after mankind mistakenly starts a war with the Mysterons from Mars, it's up to Spectrum and their lead agent Captain Scarlet, whom fate has made indestructible, to save mankind.