Exes Hae Jo and Jo Jae-mi, who went through a bad breakup years ago, have both been diagnosed with life-changing conditions. So when they cross paths, Hae Jo gets an idea: He’ll free her from her misery by whisking her away — against her will — to find out who his father is. Directed by Hong Jong-chan (Juvenile Justice) and written by Jo Yong (It’s Okay to Not Be Okay), the South Korean rom-com series Mr. Plankton stars Woo Do-hwan, Lee Yoo-mi, and Oh Jung-se.

When will Mr. Plankton be released?

Stream it now. 

Where can I find the trailer for Mr. Plankton?

Check it out at the top of this page.

Jiyeon Kim/Netflix

Who's in the cast of Mr. Plankton?

• Woo Do-hwan (Bloodhounds) as Hae Jo/Chae Seung-hyeok
• Lee Yoo-mi (Squid Game) as Jo Jae-mi, Hae Jo’s ex-girlfriend
• Oh Jung-se (Revenant) as Eo Heung, Jae-mi’s fiancé
• Kim Hae-sook (Under the Queen’s Umbrella) as Bum Ho-ja, Heung’s mother
• Rich Ting (Warrior) as Wang Chil-seong, a leader of the Prince Gang
• Kim Min-seok (Lovestruck in the City) as Yoo Gi-ho, Hae Jo’s business partner 
• Alex Landi (Grey’s Anatomy) as John Na

What happens in Mr. Plankton?

Once an orphan, Hae Jo (Woo) now runs a business doing often-shady odd jobs. But his day job loses all meaning once he finds out he has a genetic and terminal brain condition, leaving him only a few months to live. Shortly after, he crosses paths with his ex-girlfriend, Jo Jae-mi (Lee Yoo-mi). Jae-mi is pregnant — or at least that’s what she told fiancé Eo Heung’s wealthy family so they’d allow the pair to get married. But the truth is that she’s just been diagnosed with early menopause and will likely never be able to get pregnant. Now Jae-mi feels stuck … until Hae Jo kidnaps her on her wedding day to join him on a road trip to find his biological father. As the pair reconnect over their life-changing diagnoses, they’re pursued by not only Eo Heung, but also a violent gang that’s out for blood after its leader was left at the altar by one of Hae Jo’s clients. 

Jiyeon Kim/Netflix

Where does Mr. Plankton take place?

The series takes place in Seoul and across South Korea.        

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