 As Keroro prepares to give a monetary offering, he accidentally drops a 100-yen coin into the shrine, forcing him and Fuyuki to go after it.Inside the shrine is a prehistoric-looking jungle, where Fuyuki finds an ancient dome and a small glass container, inside it a glowing orb.As Keroro triumphantly finds his coin, he knocks over the container, which breaks, causing the orb to shine wildly.