diff --git a/12-custom-plugin/build.gradle b/12-custom-plugin/build.gradle
new file mode 100644
index 0000000..5b64091
--- /dev/null
+++ b/12-custom-plugin/build.gradle
@@ -0,0 +1,2 @@
+apply from: "helloPlugin.gradle"
+
diff --git a/12-custom-plugin/helloPlugin.gradle b/12-custom-plugin/helloPlugin.gradle
new file mode 100644
index 0000000..2719e8c
--- /dev/null
+++ b/12-custom-plugin/helloPlugin.gradle
@@ -0,0 +1,8 @@
+
+task helloFromPlugin() {
+    description "Say Hello! Code implemented in plugin."
+    doLast {
+        println "Hello from plugin!"
+    }
+}
+
diff --git a/README.md b/README.md
index 49f21b7..ef21e32 100644
--- a/README.md
+++ b/README.md
@@ -109,6 +109,7 @@ building decorators.
     gradle tasks
     gradle helloWorld
 
+
 ## 11-task-class
 
 Gradle allows to define custom task class. This class should contain
@@ -120,3 +121,11 @@ Each property defined on class level is configurable from gradle task
     gradle today
     gradle verboseToday
 
+
+## 12-custom-plugin
+
+It's possible to specify tasks outside build.gradle and then "include" file. 
+Gradle uses notion of plugins. Check helloPlugin.gradle file.
+
+    gradle tasks
+    gradle helloFromPlugin