First Expedition is event in TERA lore. It was expedition to newly found Island of Dawn and was lead by Elleon. Expedition ended with demon Karascha wiping out the expedition and Elleon went missing and was presumed dead.

Original TERA starting quest that began with beach landing happened during the First Expedition. However, the Prologue was removed quite early in game development and Island of Dawn became known for its (now old) green and idyllic appearance.

Level 7 gear player receives during leveling is supposedly equipment left over from the First Expedition.

After the First Expedition Magister Leander formed Second Expedition to discover what had happened and to find his lost brother. This was the starting point of TERA until the Island of Dawn rework in 2016 and the new starting area Stepstone Isle.