diff --git a/src/Codeception/Lib/Connector/Yii2.php b/src/Codeception/Lib/Connector/Yii2.php
index a0ae874..2e9e419 100644
--- a/src/Codeception/Lib/Connector/Yii2.php
+++ b/src/Codeception/Lib/Connector/Yii2.php
@@ -455,6 +455,38 @@ public function restart()
         $this->resetApplication();
     }
 
+    /**
+     * Return an assoc array with the client context: cookieJar, history.
+     *
+     * @return array
+     */
+    public function getContext()
+    {
+        return [
+            'cookieJar' => $this->cookieJar,
+            'history' => $this->history,
+        ];
+    }
+
+    /**
+     * Reset the client context: empty cookieJar and history.
+     */
+    public function removeContext()
+    {
+        parent::restart();
+    }
+
+    /**
+     * Set the context, see getContext().
+     *
+     * @param array $context
+     */
+    public function setContext(array $context)
+    {
+        $this->cookieJar = $context['cookieJar'];
+        $this->history = $context['history'];
+    }
+
     /**
      * This functions closes the session of the application, if the application exists and has a session.
      * @internal
diff --git a/src/Codeception/Module/Yii2.php b/src/Codeception/Module/Yii2.php
index 969b75f..4d1f0d6 100644
--- a/src/Codeception/Module/Yii2.php
+++ b/src/Codeception/Module/Yii2.php
@@ -8,6 +8,7 @@
 use Codeception\Lib\Connector\Yii2 as Yii2Connector;
 use Codeception\Lib\Framework;
 use Codeception\Lib\Interfaces\ActiveRecord;
+use Codeception\Lib\Interfaces\MultiSession;
 use Codeception\Lib\Interfaces\PartedModule;
 use Codeception\TestInterface;
 use Codeception\Util\Debug;
@@ -178,7 +179,7 @@
  *
  * @property \Codeception\Lib\Connector\Yii2 $client
  */
-class Yii2 extends Framework implements ActiveRecord, PartedModule
+class Yii2 extends Framework implements ActiveRecord, MultiSession, PartedModule
 {
     /**
      * Application config file must be set.
@@ -866,4 +867,62 @@ public function _afterSuite()
 
         $_SERVER = $this->server;
     }
+
+    /**
+     * Initialize an empty session. Implements MultiSession.
+     */
+    public function _initializeSession()
+    {
+        $this->client->removeContext();
+        $this->headers = [];
+        $_SESSION = [];
+        $_COOKIE = [];
+    }
+
+    /**
+     * Return the session content for future restoring. Implements MultiSession.
+     * @return array backup data
+     */
+    public function _backupSession()
+    {
+        if (isset(Yii::$app) && Yii::$app->session->useCustomStorage) {
+            throw new ModuleException("Yii2 MultiSession only supports the default session backend.");
+        }
+        return [
+            'clientContext' => $this->client->getContext(),
+            'headers' => $this->headers,
+            'cookie' => $_COOKIE,
+            'session' => $_SESSION,
+        ];
+    }
+
+    /**
+     * Restore a session. Implements MultiSession.
+     * @param array output of _backupSession()
+     */
+    public function _loadSession($session)
+    {
+        $this->client->setContext($session['clientContext']);
+        $this->headers = $session['headers'];
+        $_SESSION = $session['session'];
+        $_COOKIE = $session['cookie'];
+
+        // reset Yii::$app->user
+        if (isset(Yii::$app)) {
+            $definitions = Yii::$app->getComponents(true);
+            if (Yii::$app->has('user', true)) {
+                Yii::$app->set('user', $definitions['user']);
+            }
+        }
+    }
+
+    /**
+     * Close and dump a session. Implements MultiSession.
+     */
+    public function _closeSession($session = null)
+    {
+        if (!$session) {
+            $this->_initializeSession();
+        }
+    }
 }