From the Publisher's website:-
The great success of Dixit doesn’t make a Dixit 2 a normal project to put on the agenda, it becomes an obligation. All the emails we have received from fans all across the US, have said the same thing, we want more cards. Dixit 2 is the expansion pack that has 80 new cards with the same amazing artwork from the artist behind the first opus, Marie Cardouat. She will surprise you again. Telling a story has never been so easy with the inspiring cards.
You need dixit to be able to play this expansion