60 Days of Summer

Dong Il is the coolest old man in his 70s. He cooks using a tablet PC and knows how to use SNS. He knows how to enjoy life. But one day crisis strikes. His son leaves to the U.S. to remarry and drops his child with Dong Il whose care
An old man has trouble connecting with his young grandson that recently moved in. But then there are a series of mysterious attacks on the elderly, and the grandpa-grandson duo decide to investigate together and bond over the experience.