The Sledge Hammer is one tough, mean, fighter for the Galactic Cage Fighters Association. He doesn't take crap from anyone and if a person makes the mistake of pissing him off, they will pay for it ... painfully. He prides himself on being able to handle any kind of situation that arises. He is unafraid of anyone or anything except for ... the kids.

A terrible tragedy leaves the halfsie fighter the sole guardian of his sister's children. His life is about to be turned upside down and inside out. No longer responsible for just himself, he must find a way to balance working the hectic schedule a top GCFA fighter and with being a single parent. He finds that it is not as easy as he thought.

Molly Maynard is ready for a fresh start. Her divorce that she has been waiting two long years for is finally within her grasp. She wants a new life for herself free of her lying, cheating ex-husband. She ends up homeless, jobless, and with limited funds available to her. With few choices remaining, she agrees to take a job traveling with the Galactic Fighters Association as a nanny for one of their fighters. But her ex-husband continues to cause problems for her even from a distance.

Hammer expects the usual nanny that the company would send. She is sure to be stuffy, uptight, old, and half senile. He worries that the kids be their usual rowdy selves. The nannies never last long. He doesn't think the newest nanny will be any different. It's a real shame because Nanny Molly was hot! Hammer has to keep his mind and his hands off the nanny and her curvaceous body. He finds himself protective of her when she is harassed.