In The 7th Guest, evil toymaker Henry Stauf invited 6 guests to his haunted mansion. A 7th guest, Tad, snuck in, beginning a journey consumed by mystifying spirits, dolls and the ghosts of the other guests. The 13th Doll takes off right as the original 7th Guest ends. After defeating Stauf, Tad escapes the harrowing mansion, leaving behind the trapped souls of his fellow guests and Stauf's other victims. His newfound freedom offered no solace, as he continues to be haunted by these ghosts, so much so, that he is now hospitalized in a mental institution. There, Tad plots a return to the mansion, so he can defeat Stauf once and for all, and rescue those he left behind.
A new doctor by the name of Richmond arrives in the asylum. Young, and fresh out of college, he lacks any experience of Stauf and his legacy, and is bewildered by the asylum patients, who live in fear of the toymaker. Richmond meets Tad, and decides a cathartic trip to the mansion is in order. It is at this time that the player can choose to play as Tad, or as Dr. Richmond, with either option representing unique storylines that intertwine and affect each other in mind-boggling ways. Ultimately, the two characters become entwined in solving a mystery that may prove that they are both pawns in a larger story of murder, lies, and betrayal.
In the 7th Guest, evil toymaker Henry Stauf built a mansion, and invited 6 guests. A 7th Guest, Tad, snuck in and was trapped there, afflicted by mystifying spirits, dolls and the ghosts of the other guests - until he defeated Stauf.
The 13th Doll ties in with the events of The 7th Guest. A decade after Tad managed to escape the mansion, he is still haunted by the souls, dolls, and Stauf's victims he left behind. So haunted, in fact, that the young man now resides in a mental institution - misunderstood, plagued by guilt and obsessed with one idea: to escape the dreary padded walls of his asylum cell, return to the mansion - the site of his innermost fears - to rescue those he left behind and defeat Stauf once and for all!
Soon, a new doctor by the name of Richmond arrives in the asylum. Naïve to the legacy of Henry Stauf, and equally bewildered and intrigued by the fantastic legend, the staunch rationalist plans to take Tad on a cathartic trip back to the mansion.
This unconventional therapy attempt rapidly turns into a fateful journey, unravelling Tad and Richmond's contrasting worldviews and leading the unlikely duo straight into a horrifying vortex of lies, illusions, lunacy and death. And soon a blood-curdling question arises: Have the two visitors really made their way to Stauf's harrowing home on their own accord or are they mere pawns in a much grander, inescapable scheme?