Assigned to protect the endangered children of an assassinated scientist working on a secret invention, Shane Wolfe is suddenly faced with juggling two incompatible jobs: fighting evil while keeping house. As he adds to his usual arsenal of wetsuits and weapons the new tools of juice boxes and a minivan, Shane not only must defeat a world-threatening enemy but also wrangle teen rebel Zoe, uplift sullen 14-year-old Seth and outwit 8-year-old Ninja-wannabe Lulu, simultaneously keeping toddler Peter and baby Tyler out of mischief, not to mention harm's way. While drop zones, demolitions and destroying enemy targets come naturally to Shane, he has no idea what tough really is until he pits his courage against diapering, den-mothering and driver's education. He's truly a S.E.A.L. out of water, but this tough-guy loner soon realizes that he's also facing the most important mission of his life: becoming part of a family and bringing them all closer together.