A cat-type robot created on September 3, 2112, Doraemon travels back in time with the great-great-grandchild of Japanese schoolboy, Nobita, to save Nobita from the bad luck he creates for himself and his future descendants! Although he always means well, usually the gadgets that Doraemon pulls from the "4-D (Fourth-Dimensional) Pocket" on his tummy only make things worse.

Technically sent back as a protector, Doraemon is actually more like a best friend. Crippled by a paralyzing fear of mice, dorayaki (bean-filled jam cake) is his favorite food.