Nobita wakes up and Doraemon hears somebody steal food from the fridge in the kitchen. It is Chamii, who gets caught by Doraemon and Nobita. She shows them the passageway through Nobita's floor ...
As part of the 50th anniversary, the “Vol. 0” book, which contains all six versions of the first "Doraemon" episode, was published in 2019, becoming a best-seller at 600,000 copies.