Keely Anne Sparks is addicted to adrenaline, whether it's swimming with sharks, freestyle kayaking, or tackling dangerous Class IV rapids. Her latest craving is some spanking adventure in their marriage. Her husband is only too happy to comply. In fact, he's so happy to comply, she fears he'll reign in her daredevil spirit. When she attacks his limits with the same spirit she attacks a challenge, the limits of their marriage are stretched. Will it break? Or will it become something bigger and better?