Attack King Ghidorah!

'''Attack King Ghidorah! ('キングギドラ攻撃 -Kingugidora kōgeki!) is the five episode of Zone Fighter ''

Plot
Fed up with recent failures, Baron Garoga unleashes the golden terror known as King Ghidorah to wreck havoc and destruction across Earth. Fleeing, the Zone Family transforms back and runs to help their friend and the scientist.

Fuming at his subordinates' failure, Baron Garoga orders the Dark Prism Strategy to be placed into effect. Shortly after defeating the aliens, King Ghidorah shows up. Seeing humanity's future in the Blue-Green system, the Zone warriors transformed. Junior and Angel took the aircraft Smokey, as Hikaru grew to the giant warrior Zone Fighter. The remaining Zone family could only watch in horror as Zone Fighter's energy was drained from a combination of King Ghidorah's attacks and the Dark Prism. Earth's only hope lay in Zone Great's hands. Knocking it down briefly, the kaiju lost its concentration over the Dark Prism, allowing the sun to seep through and recharge Zone Fighter.

In a last ditch effort, Zone Great removed the Proton crystal from the house's computer. Unfortunately, with removing of the crystal the family would lose their Proton Barrier and be in the future susceptible to Garoga attacks. Caring only for the life of humanity, though, Fighter used the green crystal and flew into space, followed by the winged Ghidorah.