After some hours, a storm reached their house, with tunders and lightnings. One of them hits their house, and the light goes off, and so the PC with the chronivac. John and Amanda were asleep, so they didn't realized what happens. After some seconds, the light were on again.
The computer restarted, but not so easily: the chronivac app showed a warning on the screen:
"Partial data lost: unable to undo the last change - trying to reverse the transformation."
Then, an increasing number appeared, showing the percent of the restore. But, when reached the 45%, it stopped, and another warning blinked in the screen:
"The complete restore is impossible! Do you want to partially restore at this point?
Click "N" to keep the actual change, otherwise wait 20 seconds and these changes will be partially erased."
After 20 seconds, the warning disappeared, and another one showed on screen: "Partial change override in progress... done.
Meanwhile, in John's bed, his son Jeff came back to life in what had become Amanda's body. Her head hair shortened a bit. Her tits whitdraw in her chest while this one expanding and gaining some muscle mass, that of a 16 years old boy. A small amount of hairs curled between her smaller tits.
Her arms and legs gained some muscle mass as well, and here too grew a little fluff, darker and thicker on her forearms and shins. Her face hardened, becoming again similar to Jeff's but keeping somehow Amanda's features. A faint stubble grew on her chin, cheeks and upper lip, just like Jeff had before his dad decided to use the chronivac on him. Her clitoris grew again, until it reached the size of a small penis.
The person lying now next to John was no longer neither Amanda nor Jeff, but a nice mix between them.