Just when things seemed to have gone well for the Keroro Platoon, a force from a different dimension targets them, and they wake up in Karakura Town. Now, the five have to team up with Ichigo and Co. to defeat Aizen, and get back home with their friends.

Just like any normal day, Ichigo wakes up, fights some hollows, and then continue on with his day. Ghosts and shinigamis have become a part of his daily life, so why is he so surprised about a green alien opening his life's door?

apa jadinya kalau ada alien yang beres - beres di rumah kita tiba - tiba? hah? kok bisa? liat aja kehidupan Kurosaki Ichigo yg berubah jd lebih 'gila' gara2 alien kodok...