"Zoku Gosenzo San'e" is a sequel to the original "Gosenzo San'e" anime, continuing its exploration of complex family dynamics, supernatural elements, and psychological intrigue. The narrative revolves around the Mibu family, a lineage shrouded in mystery and cursed with a dark legacy. The protagonist, Tooru Mibu, is a young man who becomes entangled in the family's convoluted history after returning to the Mibu estate. His arrival triggers a series of events that unravel the secrets of his ancestors, particularly the enigmatic figure of San'e, a woman whose influence spans generations.

The story delves into themes of reincarnation, fate, and the cyclical nature of time. Tooru discovers that his existence is intertwined with the past lives of his ancestors, particularly San'e, whose spirit continues to exert a powerful influence over the family. As he uncovers more about his heritage, Tooru encounters various family members, each harboring their own secrets and motivations. These interactions reveal the extent of the Mibu family's curse, which binds them to a cycle of tragedy and rebirth.

Key characters include Tooru's relatives, such as his sister Aya, who shares a deep connection to the family's supernatural legacy, and his cousin Kureha, whose actions are driven by a desire to break free from the curse. The narrative also introduces figures from the past, whose stories are interwoven with the present through flashbacks and supernatural occurrences. The interplay between past and present is a central element, highlighting the inescapable nature of the family's fate.

The plot is driven by a series of revelations and confrontations, as Tooru seeks to understand his role in the family's history and whether it is possible to alter their predetermined destiny. The series blends psychological drama with supernatural horror, creating a tense and atmospheric narrative. The intricate relationships between characters and the layers of mystery surrounding the Mibu family's curse are central to the story's progression, culminating in a resolution that ties together the threads of past and present.

"Zoku Gosenzo San'e" is characterized by its dense narrative structure, rich symbolism, and exploration of existential themes. It builds upon the foundation laid by its predecessor, deepening the lore of the Mibu family and offering a compelling continuation of their story. The series is notable for its focus on character-driven drama and its ability to maintain a sense of unease and intrigue throughout its runtime.