Alison Wynn, an amateur triathlete, persuades Dr. Laura Stevens, a controversial expert in peak performance, to coach her. They embark on an intense regimen that blends advanced physical training with experimental hypnotherapy to boost Alison’s competitiveness. As Alison is pushed to her limits and confronts the painful, buried memories of her mother’s suicide, Dr. Stevens’ demanding program enables her to achieve remarkable progress and shatter her personal barriers. However, this comes at a significant cost. Alison’s professional and family life, including her relationship with her husband and daughter, deteriorates as she strives to meet Laura’s ever-increasing expectations. Laura is determined to have Alison entirely under her control, regardless of the consequences. As Alison becomes ensnared in Laura’s dark psychological scheme, it falls to her daughter to help her mother recognize the deception before it’s too late.