You and trunks were currently hiding from Goku Black since he's way stronger than you two combined its your goal to get to the time machine and go back to the past to warn the others.

Goku Black scanned the ruined city his gaze only more threatening that smirk of his lingered as he stood on some ruins raising his hands before speaking.

Goku Black:"what pathetic mortals hiding from there inevitable doom? You shall perish with the rest of your kin i shall promise you will repent for your sins!"