diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..49dafa5
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,10 @@
+root = true  ; top-most EditorConfig file
+
+; Unix-style newlines with a newline ending every file
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
diff --git a/.eslintrc.js b/.eslintrc.js
new file mode 100644
index 0000000..ec951a5
--- /dev/null
+++ b/.eslintrc.js
@@ -0,0 +1,16 @@
+module.exports = {
+  "extends": "airbnb",
+  "plugins": [],
+  "rules": {
+    "func-names": "off",
+    "strict": "off",
+    "prefer-rest-params": "off",
+    "react/require-extension" : "off",
+    "import/no-extraneous-dependencies" : "off",
+    "no-console": "off"
+  },
+  "env": {
+    "mocha": true,
+    "jest": true
+  }
+};
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3c3629e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..5f356e3
--- /dev/null
+++ b/README.md
@@ -0,0 +1,47 @@
+# Serverless S3 Sync
+
+> A plugin to sync local directories and S3 prefixes for Serverless Framework.
+
+## Install
+
+Run `npm install` in your Serverless project.
+
+```sh
+$ npm install --save serverless-s3-sync
+```
+
+Add the plugin to your serverless.yml file
+
+```yaml
+plugins:
+  - serverless-s3-sync
+```
+
+## Setup
+
+```yaml
+custom:
+  s3Sync:
+    - bucketName: my-static-site-assets # required
+      bucketPrefix: assets/ # optional
+      localDir: dist/assets # required
+    - bucketName: my-other-site
+      localDir: path/to/other-site
+
+resources:
+  Resources:
+    AssetsBucket:
+      Type: AWS::S3::Bucket
+      Properties:
+        BucketName: my-static-site-assets
+    OtherSiteBucket:
+      Type: AWS::S3::Bucket
+      Properties:
+        BucketName: my-other-site
+```
+
+## Usage
+
+Run `sls deploy`, local directories and S3 prefixes are synced.
+
+Run `sls remove`, S3 objects in S3 prefixes are removed.
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..ce9aba3
--- /dev/null
+++ b/index.js
@@ -0,0 +1,123 @@
+'use strict';
+
+const BbPromise = require('bluebird');
+const AWS = require('aws-sdk');
+const s3 = require('@monolambda/s3');
+const client = s3.createClient({
+  s3Client: new AWS.S3({})
+});
+const chalk = require('chalk');
+
+class ServerlessS3Sync {
+  constructor(serverless, options) {
+    this.serverless = serverless;
+    this.options = options || {};
+    this.s3Sync = this.serverless.service.custom.s3Sync;
+    this.servicePath = this.serverless.service.serverless.config.servicePath;
+
+    this.hooks = {
+      'after:deploy:deploy': () => BbPromise.bind(this).then(this.sync),
+      'before:remove:remove': () => BbPromise.bind(this).then(this.clear)
+    };
+  }
+
+  sync() {
+    if (!Array.isArray(this.s3Sync)) {
+      return Promise.resolve();
+    }
+    const cli = this.serverless.cli;
+    const messagePrefix = 'S3 Sync: ';
+    cli.consoleLog(`${messagePrefix}${chalk.yellow('Syncing directories and S3 prefixes...')}`);
+    const servicePath = this.servicePath;
+    const promises = this.s3Sync.map((s) => {
+      if (!s.hasOwnProperty('bucketPrefix')) {
+        s.bucketPrefix = '';
+      }
+      if (!s.bucketName || !s.localDir) {
+        throw 'Invalid custom.s3Sync';
+      }
+      return new Promise((resolve) => {
+        const params = {
+          maxAsyncS3: 5,
+          localDir: servicePath + '/' + s.localDir,
+          deleteRemoved: true,
+          followSymlinks: false,
+          s3Params: {
+            Bucket: s.bucketName,
+            Prefix: s.bucketPrefix
+          }
+        };
+        const uploader = client.uploadDir(params);
+        uploader.on('error', (err) => {
+          throw err;
+        });
+        let percent = 0;
+        uploader.on('progress', () => {
+          if (uploader.progressTotal === 0) {
+            return;
+          }
+          let current = Math.round(uploader.progressAmount/uploader.progressTotal * 10) * 10;
+          if (current > percent) {
+            percent = current;
+            cli.printDot();
+          }
+        });
+        uploader.on('end', () => {
+          resolve('done');
+        });
+      });
+    });
+    return Promise.all(promises)
+      .then(() => {
+        cli.printDot();
+        cli.consoleLog('');
+        cli.consoleLog(`${messagePrefix}${chalk.yellow('Synced.')}`);
+      });
+  }
+
+  clear() {
+    if (!Array.isArray(this.s3Sync)) {
+      return Promise.resolve();
+    }
+    const cli = this.serverless.cli;
+    const messagePrefix = 'S3 Sync: ';
+    cli.consoleLog(`${messagePrefix}${chalk.yellow('Removing S3 objects...')}`);
+    const promises = this.s3Sync.map((s) => {
+      if (!s.hasOwnProperty('bucketPrefix')) {
+        s.bucketPrefix = '';
+      }
+      return new Promise((resolve) => {
+        const params = {
+          Bucket: s.bucketName,
+          Prefix: s.bucketPrefix
+        };
+        const uploader = client.deleteDir(params);
+        uploader.on('error', (err) => {
+          throw err;
+        });
+        let percent = 0;
+        uploader.on('progress', () => {
+          if (uploader.progressTotal === 0) {
+            return;
+          }
+          let current = Math.round(uploader.progressAmount/uploader.progressTotal * 10) * 10;
+          if (current > percent) {
+            percent = current;
+            cli.printDot();
+          }
+        });
+        uploader.on('end', () => {
+          resolve('done');
+        });
+      });
+    });
+    return Promise.all(promises)
+      .then(() => {
+        cli.printDot();
+        cli.consoleLog('');
+        cli.consoleLog(`${messagePrefix}${chalk.yellow('Removed.')}`);
+      });
+  }
+}
+
+module.exports = ServerlessS3Sync;
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..7420ea6
--- /dev/null
+++ b/package.json
@@ -0,0 +1,20 @@
+{
+  "name": "serverless-s3-sync",
+  "version": "0.0.1",
+  "description": "A plugin to sync local directories and S3 prefixes for Serverless Framework.",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [
+    "serverless",
+    "s3"
+  ],
+  "author": "k1LoW <k1lowxb@gmail.com> (https://github.com/k1LoW)",
+  "license": "MIT",
+  "dependencies": {
+    "@monolambda/s3": "^1.0.1",
+    "bluebird": "^3.5.0",
+    "chalk": "^2.0.1"
+  }
+}