An enigmatic private detective struggles with personal demons as he investigates the disappearance of a Hollywood producer's beloved granddaughter.

After Kevin finds a ghost named Ernest haunting his new home, he becomes an overnight social media sensation. But when Kevin and Ernest go rogue to investigate the mystery of the latter's past, they become targets of the CIA.

Follow the hopes and dreams of four generations of a Korean immigrant family beginning with a forbidden love and crescendos into a sweeping saga that journeys between Korea, Japan and America to tell the unforgettable story of war and peace, love and loss, triumph and reckoning.