After the Fever continues to explore the complicated dynamic between Sanae, Kenta, and the wife of Sanae's ex-boyfriend. As Sanae tries to move on from her past and focus on her new life with Kenta, she finds herself constantly haunted by memories of her failed attempt to kill her ex-boyfriend.
The arrival of her ex-boyfriend's wife brings new tension and conflict into Sanae and Kenta's marriage. The wife is determined to seek revenge on Sanae for the pain she caused her husband, leading to a series of escalating confrontations between the two women.
Meanwhile, Kenta struggles to come to terms with Sanae's past and her lingering feelings for her ex-boyfriend. He begins to question whether their marriage can truly survive the weight of Sanae's past actions and emotions.
As the tension between Sanae, Kenta, and the ex-boyfriend's wife reaches a breaking point, all three must confront their own demons and make difficult choices about forgiveness, redemption, and the possibility of a new beginning. The film is a powerful exploration of love, forgiveness, and the complexities of human relationships.
