diff --git a/README.md b/README.md
index ab8f08006..feb3cd15e 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,13 @@ Features:
    changes (you can even check out a different commit while resolving merge
    conflicts).
 
+   <details>
+   <summary>Demo</summary>
+   <a href="https://asciinema.org/a/k2V5ePk89kQZg7HAGaELkl2qo" target="_blank">
+   <img src="https://asciinema.org/a/k2V5ePk89kQZg7HAGaELkl2qo.svg" />
+   </a>
+   </details>
+
  * **Operations update the repo first, then possibly the working copy**
 
    The working copy is only updated at the end of an operation, after all other
diff --git a/demos/demo_working_copy.sh b/demos/demo_working_copy.sh
new file mode 100755
index 000000000..e878b90ee
--- /dev/null
+++ b/demos/demo_working_copy.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+set -euo pipefail
+. "$(dirname "$0")"/demo_helpers.sh
+parse_args "$@"
+
+new_tmp_dir
+jj git clone https://github.com/octocat/Hello-World
+cd Hello-World
+
+run_demo 'The working copy is automatically committed' '
+run_command "# We are in the octocat/Hello-World repo."
+run_command "# We have an empty working copy on top of master:"
+run_command "jj log"
+sleep 5
+run_command "jj status"
+sleep 2
+run_command "# Now make some changes in the working copy:"
+run_command "echo \"Goodbye World!\" > README"
+run_command "echo stuff > new-file"
+run_command "# Our working copy commit id changed because we made changes:"
+run_command "jj status"
+sleep 5
+run_command "# Add a branch so we can easily refer to this commit:"
+run_command "jj branch goodbye"
+sleep 2
+run_command "# Start working on a new change off of master:"
+run_command "jj co master"
+sleep 2
+run_command "# Note that the working copy is now clean; the \"goodbye\" change stayed in its own commit:"
+run_command "jj status"
+sleep 5
+run_command "# Modify a file in this new change:"
+run_command "echo \"Hello everyone!\" > README"
+sleep 2
+run_command "# The working copy is not special; we can, for example, set the description of any commit."
+run_command "# First, set it on the working copy:"
+run_command "jj describe -m everyone"
+sleep 2
+run_command "# Now set it on the change we worked on before:"
+run_command "jj describe goodbye -m goodbye"
+sleep 2
+run_command "# Inspect the result:"
+run_command "jj log"
+'