Sienna Lane, a confident high school student, finds herself drawn into the dangerous world of underground MMA fighting after attending a fight at Breaking Point gym. There she meets Jax “Deadbeat” Deneris, the night's champion. Despite not being a damsel in distress, Sienna is captivated by Jax, a cocky fighter who comes to her aid. As Sienna grapples with her parents' divorce, Jax becomes a constant in her chaotic life, providing understanding and companionship. However, as their relationship deepens, Sienna starts to see the cracks in Jax's façade, questioning his reluctance to open up fully. Despite knowing the potential heartbreak, Sienna can't resist Jax's charms, even as she helps him face his own internal battles.