No one is more surprised than 2 scientists, Thelonious and Waldorf Smudge, when a small lab project they've been working on sparks and sputters to life! Scientifically speaking, and they are, this should not have happened, but there on the laboratory floor, the experiment walks, talks, thinks and feels! He's a completely normal boy except for one thing - he's battery operated. Zac can run, jump, play and laugh with the best of them... until he needs a recharge.
