diff --git a/proto/DataModel.proto b/proto/DataModel.proto
index c04f473..d6e6e17 100644
--- a/proto/DataModel.proto
+++ b/proto/DataModel.proto
@@ -8,6 +8,7 @@ import "VerbEndModel.proto";
 import "GenusModel.proto";
 import "AkkusativModel.proto";
 import "DativModel.proto";
+import "PluralModel.proto";
 
 message DataModel
 {
@@ -17,4 +18,5 @@ message DataModel
 	GenusModel Genus = 4;
 	AkkusativModel Akkusativ = 5;
 	DativModel Dativ = 6;
+	PluralModel Plural = 7;
 }
diff --git a/proto/PluralModel.proto b/proto/PluralModel.proto
new file mode 100644
index 0000000..78ef0b8
--- /dev/null
+++ b/proto/PluralModel.proto
@@ -0,0 +1,16 @@
+syntax = "proto3";
+
+package ESGRAF48;
+
+message PluralModel
+{
+	bool Fisch = 1;
+	bool Banane = 2;
+	bool Bonbon = 3;
+	bool Ei = 4;
+	bool Eimer = 5;
+	bool Korn = 6;
+	bool Nuss = 7;
+	bool Baer = 8;
+	bool Apfel = 9;
+}
diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt
index 6180070..85e1c57 100644
--- a/source/CMakeLists.txt
+++ b/source/CMakeLists.txt
@@ -25,6 +25,7 @@ set(DataModel_PROTO_FILES
 	../proto/GenusModel.proto
 	../proto/AkkusativModel.proto
 	../proto/DativModel.proto
+	../proto/PluralModel.proto
 )
 
 protobuf_generate_cpp(DataModel_PROTO_SRCS DataModel_PROTO_HDRS
diff --git a/source/DataModel.cpp b/source/DataModel.cpp
index 08bf4bc..e33b1c1 100644
--- a/source/DataModel.cpp
+++ b/source/DataModel.cpp
@@ -37,6 +37,7 @@ void DataModel::writeProtoBuf(std::ostream &outStream) const
 	m_genus.writeProtoBuf(*dataModel.mutable_genus());
 	m_akkusativ.write(*dataModel.mutable_akkusativ());
 	m_dativ.write(*dataModel.mutable_dativ());
+	m_plural.write(*dataModel.mutable_plural());
 
 	dataModel.SerializeToOstream(&outStream);
 }
@@ -52,6 +53,7 @@ void DataModel::readProtoBuf(std::istream &inStream)
 	m_genus.readProtoBuf(dataModel.genus());
 	m_akkusativ.read(dataModel.akkusativ());
 	m_dativ.read(dataModel.dativ());
+	m_plural.read(dataModel.plural());
 }
 
 std::string DataModel::toHtml() const
diff --git a/source/SubTests/Plural/CMakeLists.txt b/source/SubTests/Plural/CMakeLists.txt
index 36245b1..7a6aa58 100644
--- a/source/SubTests/Plural/CMakeLists.txt
+++ b/source/SubTests/Plural/CMakeLists.txt
@@ -3,6 +3,7 @@ cmake_minimum_required(VERSION 3.6)
 project(Plural LANGUAGES CXX)
 
 find_package(Qt5Widgets REQUIRED)
+find_package(Protobuf REQUIRED)
 
 set(CMAKE_AUTOMOC ON)
 
@@ -10,10 +11,18 @@ qt5_wrap_ui(UI_HEADERS
 	PluralWidget.ui
 )
 
+set(Plural_PROTO_FILES
+	../../../proto/PluralModel.proto
+)
+
+protobuf_generate_cpp(Plural_PROTO_SRCS Plural_PROTO_HDRS ${Plural_PROTO_FILES})
+
 add_library(${PROJECT_NAME}
 	PluralWidget.cpp
 	PluralModel.cpp
 	${UI_HEADERS}
+	${Plural_PROTO_SRCS}
+	${Plural_PROTO_HDRS}
 )
 
 set_target_properties(${PROJECT_NAME}
@@ -25,6 +34,7 @@ target_include_directories(${PROJECT_NAME}
 		${CMAKE_CURRENT_SOURCE_DIR}
 	PRIVATE
 		${CMAKE_CURRENT_BINARY_DIR}
+		${Protobuf_INCLUDE_DIRS}
 )
 
 target_link_libraries(${PROJECT_NAME}
@@ -33,4 +43,5 @@ target_link_libraries(${PROJECT_NAME}
 		CheckableTest
 		CheckableTestModel
 		Qt5::Widgets
+		${Protobuf_LIBRARIES}
 )
diff --git a/source/SubTests/Plural/PluralModel.cpp b/source/SubTests/Plural/PluralModel.cpp
index 5be047a..a1a208e 100644
--- a/source/SubTests/Plural/PluralModel.cpp
+++ b/source/SubTests/Plural/PluralModel.cpp
@@ -3,20 +3,49 @@
 #include <QSize>
 
 PluralModel::PluralModel(QObject *parent)
-	: CheckableTestModel(parent)
+    : CheckableTestModel(parent)
 {
-	m_tests = { { "",
-		{ "Fisch /-e/", "Banane /-n/", "Bonbon /-s/", "Ei /-er/", "Eimer /-ø/",
-          "Korn UML+/-er/", "Nuss UML+/-e/", "Bär /-en/", "Apfel UML" } } };
+	m_tests = {{"",
+	            {"Fisch /-e/", "Banane /-n/", "Bonbon /-s/", "Ei /-er/", "Eimer /-ø/",
+	             "Korn UML+/-er/", "Nuss UML+/-e/", "Bär /-en/", "Apfel UML"}}};
 }
 
 QVariant PluralModel::data(const QModelIndex &index, int role) const
 {
-    if (role == Qt::SizeHintRole)
-    {
-        return QSize(180, 0);
-    }
+	if (role == Qt::SizeHintRole)
+	{
+		return QSize(180, 0);
+	}
 
-    return CheckableTestModel::data(index, role);
+	return CheckableTestModel::data(index, role);
 }
 
+void PluralModel::read(const ESGRAF48::PluralModel &model)
+{
+	auto &testItems = m_tests.at(0).items();
+
+	testItems[0].setState(model.fisch());
+	testItems[1].setState(model.banane());
+	testItems[2].setState(model.bonbon());
+	testItems[3].setState(model.ei());
+	testItems[4].setState(model.eimer());
+	testItems[5].setState(model.korn());
+	testItems[6].setState(model.nuss());
+	testItems[7].setState(model.baer());
+	testItems[8].setState(model.apfel());
+}
+
+void PluralModel::write(ESGRAF48::PluralModel &model) const
+{
+	const auto &testItems = m_tests.at(0).items();
+
+	model.set_fisch(testItems[0].isChecked());
+	model.set_banane(testItems[1].isChecked());
+	model.set_bonbon(testItems[2].isChecked());
+	model.set_ei(testItems[3].isChecked());
+	model.set_eimer(testItems[4].isChecked());
+	model.set_korn(testItems[5].isChecked());
+	model.set_nuss(testItems[6].isChecked());
+	model.set_baer(testItems[7].isChecked());
+	model.set_apfel(testItems[8].isChecked());
+}
diff --git a/source/SubTests/Plural/PluralModel.h b/source/SubTests/Plural/PluralModel.h
index 8a07a55..cadeae9 100644
--- a/source/SubTests/Plural/PluralModel.h
+++ b/source/SubTests/Plural/PluralModel.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "CheckableTestModel.h"
+#include "PluralModel.pb.h"
 
 class PluralModel : public CheckableTestModel
 {
@@ -11,4 +12,7 @@ public:
 
     QVariant data(
         const QModelIndex &index, int role = Qt::DisplayRole) const override;
+
+	void read(const ESGRAF48::PluralModel &model);
+	void write(ESGRAF48::PluralModel &model) const;
 };