Sarah is a seventh-grader who approaches the world through math and probabilities. She lives with her parents and older brother in a home currently facing foreclosure due to sudden financial strain. Generally risk-averse, her desperation to save her family pushes her out of her comfort zone to seek a local legend's hidden fortune.

West is a tall, practical seventh-grader who favors logic over physical adventure. He possesses an extraordinary memory that allows him to recall minute details and solve complex puzzles effortlessly. He harbors quiet anxieties about drawing unwanted attention to his intelligence, sometimes pretending to forget things just to blend in.

Hannah is an energetic seventh-grader who serves as the athletic foundation of her friend group. She constantly chews gum and uses jokes to lighten the mood during tense situations. Despite her confident exterior and physical agility, she makes impulsive decisions to mask deep-seated insecurities about disappointing the people she cares about.

The Stein brothers are orphaned triplets from the 1950s who spent their childhoods separated before reuniting as adults. They combined their distinct skills as a cabinetmaker, a banker, and a bookstore employee to construct a massive funhouse filled with traps and riddles. The project was abandoned after Stefan's unexpected death, leaving behind rumors of hidden riches.

Sarah's mother works constantly, splitting her days between a dental clinic and a local shop to support her family financially. She carries the emotional and financial burden of her husband's illness entirely on her own shoulders. The stress of an impending bank foreclosure occasionally breaks her normally stoic demeanor.

Sarah's father suffers from chronic fatigue syndrome, an illness that leaves him constantly exhausted and unable to maintain employment. The loss of his income serves as the primary catalyst for the family's financial instability. His condition limits his daily activities, altering the entire household dynamic.

Sean is a high school student currently preparing to transition into higher education. His college plans are directly threatened by the severe financial crisis currently affecting his parents.

William is an eccentric local man and a direct descendant of Stefan Stein. Over the decades, he has repeatedly attempted to break into the abandoned property to locate the legendary fortune, resulting in multiple arrests for trespassing.

Art Conley is a television show host who previously attempted to locate the rumored riches left behind by the Stein brothers. Similar to others who tried to crack the building's secrets, his investigation ended in a trespassing arrest.