Two Japanese space heroes from the late '50s and early '60s are featured in this double bill. First, "Prince of Space" (who was also called Planet Prince) defends Earth from the cackling Phantom of Krankor and his one-ship invasion fleet in a campily fun sci-fi adventure. Tatsuya Umemiya and Johji Oka star. Next, action icon Shinichi "Sonny" Chiba plays the super-powered Ironsharp (who was also called Space Chief), who hops into his "custom space coupe" to defeat the "Invasion of the Neptune Men." AKA: "Space Greyhound." 160 min. total. Widescreen (Enhanced); Soundtrack: English (dubbed) Dolby Digital mono; Subtitles: English; theatrical trailers. Dubbed in English.