Thirteen-year-old Napoleon Augustus Smythe (Battle Boy 005) is now Battle Agent 005. Along with BA004, BA009 and super soldier TEX, he is a member of Omega Squad - an elite team of Time Troopers sent back into history for Operation Battle Book. But Professor Perdu, their mission controller, is worried. Someone is stealing TIME and ENERGY bundles from the Battle Books. Someone is determined to sabotage Operation Battle Book. But who? And why?