You can find WolfCMS here

Tested with WolfCMS 0.8.1

git clone git@github.com:prellele/wolf_redirect_to_first_child.git
copy "redirect_to_first_child" dir into your wolfcms plugin dir

• Go to your admin panel.
• Go to Administration.
• Check the box under Enable for Redirect To First Child.

• Create a new page.
• Go to Settings.
• Choose Redirect to first child in the Page Type dropdown.
• Save the page.