When a freak accident hospitalizes Marty Golden's sister and condemns him to babysitter duty, he thinks it's just another case of hardwired bad luck in Silicon Valley. Until a suspicious murder suggests the mishap was no mere coincidence. Something must be done.

Too bad this quirky, fashion-backward uncle isn't exactly hero material.

Convinced his sister is in mortal danger, this amateur sleuth follows clues to an oddball array of suspects. Armed with nothing but an eye for detail and powers of self-delusion, Marty tangles with gangsters, a cantankerous school secretary, and a perplexing woman he can't help but fall for. Glitches in his investigation seem like a piece of cake compared to dinner-prep and bedtime stories with his two precocious, pre-teen nieces.

Can Marty catch the culprit, save his sister, and get his life back in order before he gets unplugged?