2x7 - Buzz Lightyear of Star Command

With a wrist-mounted time travel device, a 150 year old Buzz (which would make him from about 110 years in the future...see ""Lone Wolf""...) travels back to ""now"" to prevent Mira from being killed. Unfortunately, it happened so long ago that he can't quite recall just how, when or where Mira is going to die (...and, it would seem, time travel turns one's memory to ""Swiss Cheese""...Quantum Leap reference?).