Conversation so far:
when did harry potter and the sorcerer's stone start filming
Filming for Harry Potter and the Sorcerer's Stone began on 29 September 2000.
when did the filming for Harry Potter and the Sorcerer's Stone end
Harry Potter and the Sorcerer's Stone concluded filming on 23 March 2001.

Question: what is the film about
Self-contained rewrite: what is the film Harry Potter and the Sorcerer's Stone about