For Tony and Jennifer, life is good — well, almost all of it. They've been married three years and love each other deeply. But their sex life suffers when Tony receives a promotion and Jennifer starts her own design business. Once their lovemaking had been wild and steamy, now it's often quick and boring. They're stuck in a rut and don't know how to get out.

When Jennifer shares her concerns with her best friend, she is intrigued by Liz's suggestion of an erotic, highly sexual challenge — use increasingly exhibitionistic games to infuse their relationship with the steamy desire and spark that's missing.

In order to put the searing heat back into their marriage, Jennifer and Tony must overcome their trepidation to go along with the challenge, but neither knows what is in store for them. An encounter in a public hot tub seems risky enough, but then other, bolder challenges follow.

But the rewards for such risky behavior are hot. In a sexual and emotional journey, they rediscover not only the missing spark, but the reasons why they love each other.