Kamen Raidaa Bui Surii Tai Desutoron Kaijin plot
Kamen Rider V3 tries to protect a family from Destron. However, Doctor G. and his soldiers from Destron come with many to do battle with Kamen Rider V3 and so he doesn't stand a chance. That is why he is assisted by Kamen Rider 1 and 2. Together they are a lot stronger against the odds.