Ho-tae, the hard-working delivery boy at a fish market in Busan, often plays guitar and sings at his favorite spot, the lighthouse. He runs into his old classmate, Elly. Elly, the former violin prodigy turns out to have serious interests in Rock ‘n’ Roll now. She even takes rather unusual guitar lessons from somewhat strange old folks unknown to her dad. With her insisting that one of them is the vocal of the legendary band, ‘The Legend’, Ho-tae follows Elly to the music class. They, with own secrets, start a strange journey together.
Jang-hee Lee graduated from department of Mass Communication at Kyungbuk National University in 1997. He has been working for KNN as a TV producer. His first TV drama < Reply Drama >(2007) won The Producer Of The Month Award, and a sitcom Chonti-com < Welcome to Gao-ri >(2013) won Korean Broadcasting Award. < Rock 'n' Roll Grandpa > is his first feature-length film.