The last clone body not destroyed by Skywalker or traitorous Imperials is now aging rapidly, and Palpatine's final end is near, unless he can either fix his genetic material (an impossibility since no unaltered samples remain) or insert his spirit into another body. After consulting with ancient Sith Lords on the mausoleum planet Korriban, Palpatine learns that Han and Leia's youngest child, named Anakin after his deceased grandfather, has the only workable body.
Palpatine
Anakin