It's Nyx's birthday and her parents and their friends want to throw the most special party for the little alicorn. Ben also goes looking for a gift for his daughter as well.

The cover art is a fanart courtesy of sgtgarand. http://sgtgarand.deviantart.com/art/Nyx-s-Birthday-257308809

When Crosspatch and Lazybug finally discover what became of their parents after the Zap-O-Lantern fiasco, they end up helping Twilight Sparkle uncover a significant gap in Equestria’s recent history.

Comic version: http://lister-of-smeg.deviantart.com/gallery/53179306/Crystal-Heart-Attack

This story is a sequel to Flash Sentry Chronicles: The Legend of Everfree

Everything appears peaceful in Equestria and our heroes are getting ready to celebrate Spike's birthday. But everything changes when a new enemy appears, one that they thought was a friend. With war threatening to break out, it's up to our heroes to find a way to stop the violence and defeat this foe. But to do so, they must look to Spike's past. A past even he knows very little about.

Edited by KingJoltik

TVTropes