No. 1 Sentai Gozyuger S01 E07 Heart-Pounding! The Gozyugers Unite!

"We don't need five people for "Number One"!"

A mysterious man name Meguru Osai that call himself a "Sentai Archeologist" appear in front Hoeru, Ryugi and Kinjiro. They been given certain missions which if they succeed, he will give them his Sentai Rings.