diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -6,6 +6,7 @@
   attachment.cpp
   attendee.cpp
   calendar.cpp
+  calendarplugin.cpp
   calfilter.cpp
   calformat.cpp
   calstorage.cpp
@@ -92,6 +93,7 @@
   CalFormat
   CalStorage
   Calendar
+  CalendarPlugin
   CustomProperties
   Duration
   Event
diff --git a/src/calendarplugin.h b/src/calendarplugin.h
new file mode 100644
--- /dev/null
+++ b/src/calendarplugin.h
@@ -0,0 +1,43 @@
+/*
+  This file is part of the kcalcore library.
+
+  SPDX-FileCopyrightText: 2020 Nicolas Fella <nicolas.fella@gmx.de>
+  SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+#pragma once
+
+#include <KCalendarCore/Calendar>
+
+namespace KCalendarCore
+{
+/**
+  @brief
+  A plugin that provides calendar data.
+
+  It allows calendar applications to consume data provided by multiple
+  sources, e.g. local ical files or remote calendars.
+*/
+class Q_DECL_EXPORT CalendarPlugin : public QObject
+{
+    Q_OBJECT
+public:
+    CalendarPlugin(QObject *parent, const QVariantList &args);
+
+    /**
+     * The set of calendars defined by this plugin.
+     *
+     * @return QVector of calendars.
+     */
+    virtual QVector<Calendar::Ptr> calendars() const = 0;
+
+Q_SIGNALS:
+    /**
+     * Emitted when the set of calendars changed.
+     */
+    void calendarsChanged();
+
+private:
+    void *d;
+};
+
+}
diff --git a/src/calendarplugin.cpp b/src/calendarplugin.cpp
new file mode 100644
--- /dev/null
+++ b/src/calendarplugin.cpp
@@ -0,0 +1,16 @@
+/*
+  This file is part of the kcalcore library.
+
+  SPDX-FileCopyrightText: 2020 Nicolas Fella <nicolas.fella@gmx.de>
+  SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#include "calendarplugin.h"
+
+using namespace KCalendarCore;
+
+CalendarPlugin::CalendarPlugin(QObject *parent, const QVariantList &args)
+    : QObject(parent)
+{
+    Q_UNUSED(args)
+}