"Love on the Brain" is a contemporary romance novel by Ali Hazelwood that tells the story of a young woman named Carli who is navigating her way through life with a brain injury. Despite the challenges that come with her condition, Carli is determined to live life to the fullest and not let her injury define her.

Carli is a successful graphic designer who has a close relationship with her sister, Kiki. When Kiki starts dating a new guy named Dylan, Carli is skeptical of their relationship and becomes determined to find out more about him. In doing so, Carli discovers that Dylan is not who he seems and that Kiki may be in danger.

Enter Dr. Hunter King, a neurosurgeon who is an expert in brain injuries. Hunter is also Carli's former crush from college, and the two rekindle their connection as they work together to help Kiki and take down Dylan.

As Carli and Hunter spend more time together, their attraction grows, but Carli is hesitant to let herself fall for someone, especially someone in the medical field who is familiar with her condition. However, Hunter is persistent and determined to show Carli that he sees her for who she is, not just her injury.

As the investigation into Dylan's true identity heats up, Carli and Hunter must work together to protect Kiki and bring justice to those who have been harmed. Along the way, they also navigate their growing feelings for each other and learn to trust in the power of love.

"Love on the Brain" is a heartwarming and suspenseful romance that explores themes of overcoming adversity, family, and the healing power of love. With well-drawn characters and a captivating plot, Ali Hazelwood delivers a satisfying read that will leave readers rooting for Carli and Hunter's happily ever after.