The highly anticipated season 3 of Sweet Home debuted worldwide on Netflix on Friday, July 19, 2024. The previous season ended on a noteworthy note. It showed a monster cocoon hatching and Lee Eun-Hyeok (Lee Do-Hyun) emerging from it. He then walked naked among the monsters in the world. Fans have been eagerly awaiting what the third and final season has in store for them. They also want to know how the monster saga ended.

In the third season, viewers see Hyun-Su (Song Kang) and Eun-Yoo (Go Min-Si) reunite with Lee Eun-Hyeok (Lee Do-Hyun), who has now become a neohuman. The final season also shows the monster version of Sang-Won, who lives in the body of Pyeon Sang-Wook (Lee Jin-Young), and takes over the body of his mutant daughter Seo Yi-Su (Kim Si-A). The monster uses her as a new vessel because she has extraordinary powers. The monster continues to create its own army using the survivors because it can control their minds.

Episode 8 (finale) of Sweet Home season 3 sees Sang Won's monster Yi-Su bring Hyun-Su and Eun-Hyeok to the field next to the stadium. There, a colossal battle breaks out between the monsters, humans, and neohumans. The episode then takes fans on a thrilling and emotional ride, leading to a cathartic ending.

The Season 3 finale of Sweet Home begins with Hyun-Su and Eun-Hyeok battling the Sang-Won monster inside Yi-Su's body and the massive army it created. Eun-Hyeok, now a neohuman, wants to kill Yi-Su to eliminate the monster inside her. However, Hyun-Su stops him because he wants to save her. He believes he can bring her back to her human form, just like he did with her mother, Yi-Kyung (Lee Si-Young).