Finding the Daily Heroic Story

I'm looking for a way to use the API to determine the Daily Heroic Story. I can look at the "Available Activities" endpoint for a character, like so: http://www.bungie.net/Platform/Destiny/2/Account/4611686018429112225/Character/2305843009216625690/Activities/?definitions=true (as an aside: Bungie, the help page for this call is wrong[http://www.bungie.net/Platform/Destiny/help/HelpDetail/GET?uri={membershipType}%2fAccount%2f{destinyMembershipId}%2fCharacter%2f{characterId}%2fActivities%2f] - it is a copy of the help page for the character inventory call) but it includes the heroic versions of ALL stories, even ones that aren't the current Daily Heroic Story.