diff --git a/certbot-dns-nsone/certbot_dns_nsone/__init__.py b/certbot-dns-nsone/certbot_dns_nsone/__init__.py
index 8c061edf7..e59be74a7 100644
--- a/certbot-dns-nsone/certbot_dns_nsone/__init__.py
+++ b/certbot-dns-nsone/certbot_dns_nsone/__init__.py
@@ -1 +1,85 @@
-"""NS1 DNS Authenticator"""
+"""
+The `~certbot_dns_nsone.dns_nsone` plugin automates the process of completing
+a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and subsequently
+removing, TXT records using the NS1 API.
+
+
+Named Arguments
+---------------
+
+========================================  =====================================
+``--dns-nsone-credentials``               NS1 credentials_ INI file.
+                                          (Required)
+``--dns-nsone-propagation-seconds``       The number of seconds to wait for DNS
+                                          to propagate before asking the ACME
+                                          server to verify the DNS record.
+                                          (Default: 30)
+========================================  =====================================
+
+
+Credentials
+-----------
+
+Use of this plugin requires a configuration file containing NS1 API credentials,
+obtained from your NS1
+`account page <https://my.nsone.net/#/account/settings>`_.
+
+.. code-block:: ini
+   :name: credentials.ini
+   :caption: Example credentials file:
+
+   # NS1 API credentials used by Certbot
+   dns_nsone_api_key = MDAwMDAwMDAwMDAwMDAw
+
+The path to this file can be provided interactively or using the
+``--dns-nsone-credentials`` command-line argument. Certbot records the path
+to this file for use during renewal, but does not store the file's contents.
+
+.. caution::
+   You should protect these API credentials as you would the password to your
+   NS1 account. Users who can read this file can use these credentials to issue
+   arbitrary API calls on your behalf. Users who can cause Certbot to run using
+   these credentials can complete a ``dns-01`` challenge to acquire new
+   certificates or revoke existing certificates for associated domains, even if
+   those domains aren't being managed by this server.
+
+Certbot will emit a warning if it detects that the credentials file can be
+accessed by other users on your system. The warning reads "Unsafe permissions
+on credentials configuration file", followed by the path to the credentials
+file. This warning will be emitted each time Certbot uses the credentials file,
+including for renewal, and cannot be silenced except by addressing the issue
+(e.g., by using a command like ``chmod 600`` to restrict access to the file).
+
+
+Examples
+--------
+
+.. code-block:: bash
+   :caption: To acquire a certificate for ``example.com``
+
+   certbot certonly \\
+     --dns-nsone \\
+     --dns-nsone-credentials ~/.secrets/certbot/nsone.ini \\
+     -d example.com
+
+.. code-block:: bash
+   :caption: To acquire a single certificate for both ``example.com`` and
+             ``www.example.com``
+
+   certbot certonly \\
+     --dns-nsone \\
+     --dns-nsone-credentials ~/.secrets/certbot/nsone.ini \\
+     -d example.com \\
+     -d www.example.com
+
+.. code-block:: bash
+   :caption: To acquire a certificate for ``example.com``, waiting 60 seconds
+             for DNS propagation
+
+   certbot certonly \\
+     --dns-nsone \\
+     --dns-nsone-credentials ~/.secrets/certbot/nsone.ini \\
+     --dns-nsone-propagation-seconds 60 \\
+     -d example.com
+
+"""