The WORST episodes of Mr. Plankton

Every episode of Mr. Plankton ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of Mr. Plankton!

A man who should not have been born and the unhappiest woman in the world are forced to accompany one another on the final journey of his life.

Last Updated: 4/9/2026Network: NetflixStatus: Ended

7.60

50 votes

#1 - Episode 1

Season 1 - Episode 1 - Aired 11/8/2024

Hae-jo, who runs an errand center, accepts Noh Yang-hui's request to kidnap her on her wedding day. Later, he unexpectedly runs into an old flame.

Watch Now:Amazon

7.86

37 votes

#2 - Episode 2

Season 1 - Episode 2 - Aired 11/8/2024

Hae-jo sets out to find his sperm donor, the biological father he never knew. He crashes Jo Jae-mi's wedding and drags her along.

Watch Now:Amazon

8.10

31 votes

#3 - Episode 6

Season 1 - Episode 6 - Aired 11/8/2024

Heung reflects on his relationship with Jae-mi. After Hae-jo steals a boat to escape Chil-seong, they end up stranded on a deserted island.

8.20

30 votes

#4 - Episode 5

Season 1 - Episode 5 - Aired 11/8/2024

Hae-jo spends meaningful time with Ko Jae-geun up in the mountains. Back in Seoul, Chil-seong corners Kkari and forces him to track down his old partner.

Watch Now:Amazon

8.27

37 votes

#5 - Episode 3

Season 1 - Episode 3 - Aired 11/8/2024

Hae-jo recounts his first meeting with Jae-mi. While a huge fight breaks out at the sundae shop, Eo Heung and Wang Chil-seong's gang close in.

Watch Now:Amazon

8.30

30 votes

#6 - Episode 8

Season 1 - Episode 8 - Aired 11/8/2024

Afraid of hurting Jae-mi again, Hae-jo tries to push her away. Later, he takes on a new errand and meets a young girl looking for her long-lost brother.

Watch Now:Amazon

8.34

32 votes

#7 - Episode 4

Season 1 - Episode 4 - Aired 11/8/2024

Jae-mi makes a tough choice between Hae-jo and her devoted fiancé. Soon they head down to Busan, while a mysterious figure arrives to bail Heung out.

Watch Now:Amazon

8.39

33 votes

#8 - Episode 7

Season 1 - Episode 7 - Aired 11/8/2024

Shaken by the island ordeal, Hae-jo slips into a slump his friend Yang Bong-suk can't lift. Meanwhile, Heung does everything to stay by Jae-mi's side.

Watch Now:Amazon

8.42

33 votes

#9 - Episode 9

Season 1 - Episode 9 - Aired 11/8/2024

After learning about Hae-jo's severe condition, Jae-mi is determined to help him find his biological father. But when she returns, he's gone.

Watch Now:Amazon

8.66

38 votes

#10 - Episode 10

Season 1 - Episode 10 - Aired 11/8/2024

Now alone with Heung, Hae-jo reflects on his unfortunate life. After a tense reunion at Kkari's workplace, Hae-jo decides to confront his painful past.

Watch Now:Amazon