diff --git a/eslint/babel-eslint-parser/README.md b/eslint/babel-eslint-parser/README.md
index dd63887924..889de538a3 100644
--- a/eslint/babel-eslint-parser/README.md
+++ b/eslint/babel-eslint-parser/README.md
@@ -34,3 +34,10 @@ Check out the [ESLint docs](http://eslint.org/docs/rules/) for all possible rule
 ```sh
 $ eslint your-files-here
 ```
+
+## How does it work?
+
+ESLint allows custom parsers. This is great but some of the syntax nodes that Babel supports
+aren't supported by ESLint. When using this plugin, ESLint is monkeypatched and your code is
+transformed into code that ESLint can understand. All location info such as line numbers,
+columns is also retained so you can track down errors with ease.