Seventeen embarks on a world tour to Singapore, where their concert goes smoothly. With some time off, the members explore the neighbour country, Malaysia to immersing themselves in its rich culture and history. During a visit to a museum showcasing ancient Southeast Asian weapons, Chan is particularly drawn to a keris, an intricately designed dagger.
Chan experiences unsettling physical and emotional changes, and despite trying to keep it from the others, his condition worsens. After a mysterious interview with a local media personality, who hints at paranormal activities surrounding old weapons like the keris, the members begin to notice eerie occurrences surrounding Chan.
As the situation intensifies, Chan's health declines, prompting the group to seek help. The story weaves together elements of cultural discovery, ancient traditions, and the supernatural, all while highlighting the bond between the members of Seventeen.