This is one of those things that can disrupt a seemingly normal family. Byun Han Soo (Kim Young Chul) lives on the outskirts of Seoul with his selfless wife, Na Young Sil (Kim Hae Sook). Their bustling lives center around his small diner, “Daddy’s Snack Shop,” and their four adult children, Joon Young (Min Jin Woong), Hye Young (Lee Yoo Ri), Mi Young (Jung So Min) and Ra Young (Ryu Hwayoung).

Joon Young tries not to disappoint his parents as he has been unable to pass the civil service exam for five years. Hye Young is the most accomplished as a successful attorney who has an on-again, off-again relationship with Cha Jung Hwan (Ryu Soo Young), a television producer-director. After years of trying to land a job, Mi Young finally lands her dream job as an intern for Gabi Entertainment, only to discover that her high school bully, Kim Yoo Joo (Lee Mi Do), works there as a team leader. Ra Young works a yoga instructor and falls for Park Cheol Soo (Ahn Hyo Seop), who has absolutely no interest in returning her attention.

The close-knit Byun family is thrown into turmoil when Ahn Joong Hee (Lee Joon), an idol-turned-actor, shows up one day and claims that Han Soo is his father. Joong Hee is widely ridiculed by netizens as a robotic actor, but he is determined to earn respect by landing a role in a highly anticipated miniseries about a father-son relationship. But in order to conjure the emotions needed for the role, Joong Hee decides he needs to get to know the father he believes abandoned him and his mother 35 years ago.

Will Joong Hee’s appearance threaten to reveal a deeply buried secret and otherwise disrupt Han Soo’s happy family life?

“Father Is Strange” is a 2017 South Korean drama series directed by Lee Jae Sang.