diff --git a/src/Models/Scene.php b/src/Models/Scene.php
index 8d3f8ac..1202029 100644
--- a/src/Models/Scene.php
+++ b/src/Models/Scene.php
@@ -30,13 +30,13 @@ class Scene implements CreateableInterface
     private $id;
 
     /**
-     * @ManyToOne(targetEntity="Scene")
+     * @ManyToOne(targetEntity="Scene", cascade={"persist"})
      * @JoinColumn(name="parent", referencedColumnName="id", nullable=true)
      */
     private $parent = null;
 
     /**
-     * @OneToMany(targetEntity="Scene", mappedBy="parent")
+     * @OneToMany(targetEntity="Scene", mappedBy="parent", cascade={"persist", "remove"})
      */
     private $children = [];
 
diff --git a/src/Module.php b/src/Module.php
index 7ccbfb0..df27aaf 100644
--- a/src/Module.php
+++ b/src/Module.php
@@ -9,6 +9,18 @@ use LotGD\Core\Models\Module as ModuleModel;
  */
 interface Module extends EventHandler
 {
+    /**
+     * Called when an event is published that is handled by this class.
+     *
+     * @param Game $g The game.
+     * @param string $event Name of this event.
+     * @param array $context Arbitrary dictionary representing context around this event.
+     * @return array|null Return an array if you want to make changes to the $context before
+     * the next handler is called. Otherwise, return null. Any changes made will be propogated
+     * to the event publisher as well.
+     */
+    public static function handleEvent(Game $g, string $event, array &$context);
+
     /**
      * Lifecycle method called when this module is initially installed. Use
      * this method to perform one-time setup operations like adding tables