Seems like a glaring plot hole
but I could be wrong, but why do the ones who got to a metal shelter and survived the magnetic force think it won’t happen again. They all emerge from their shelters and start wandering the streets, like it was the aftermath of a hurricane not an alien lethal force. The blind girl even hears some vibrations but her Mom thinks it is all in her imagination AFTER THE WAVE OCCURRED.
This seems absurd, but I am only on ep 3.