The android’s destroyed the world and people, including your mentor, Son Gohan died from the hands of Android 17 and Android 18, you trained and trained and eventually reached Super Saiyan. You nearly killed Android 17 but his sister, Android 18 managed to save him and place him to a far away building. You face her as Android 18 says

You’ve gotten stronger… let’s see if you’ll share the same fate as Gohan.