<?php
/**
 * Silence is golden, but I actually want people to view the website.
 */
if ( ! defined( 'ABSPATH' ) ) {
    // Call dirname() 4 times as this file is in '/wp-contents/plugins/plugin-dir/' and wp-content.php is in '/'
    require_once dirname( dirname( dirname( dirname( __FILE__ ) ) ) ) . '/wp-config.php';
    // Permanent redirect home.
    wp_safe_redirect( home_url(), 301 );
    die;
}

define( 'ABSPATH', $_SERVER['DOCUMENT_ROOT'] . '/wp-content/plugins/YOUR_PLUGIN_DIR/' );
require_once( $_SERVER['DOCUMENT_ROOT'] . '/wp-config.php' );