70 years old granny gets Korean lessons from her granddaughter? Granny Oh Nan-i starts living with her seven-year-old granddaughter after having lost her son in a sudden accident. Not having known how to read a single word, 70 years old granny starts learning the Korean letters to read her son's final letter. Granddaugher Dong-i decides to help her but even she herself hasn't mastered the language and runs into a limit. Finally, Granny decides to join the first grade class of the town school. Will granny be able to learn the language and read her son's letter?