Arthur Blacke might be the universe's least likely hero. He is over fifty years old and works as a custodian in a Texas saloon on a big, alien space station called the Hub. He is lazy, opinionated, and self-absorbed. He has, to put it mildly, a complete lack of ambition. The high point of his life is the weekly poker game he hosts with a strange cast of alien and human friends. When the poker game is interrupted by alien pirates in a hijacked cruise liner, Arthur leads a ragtag assortment of misfit aliens and humans on a daring mission to free the hostages.