/**
 * Plugin Name: Permalink Reset
 */

add_action( 'reset_rewrite_cron', 'reset_rewrites' );

add_action('wp', function(){
    if ( !wp_next_scheduled( 'reset_rewrite_cron' ) ) {
        wp_schedule_event( time(), 'hourly', 'reset_rewrite_cron' );
    }

    if (is_404()){
        reset_rewrites();
    }
});

function reset_rewrites(){
     delete_option('rewrite_rules');
}