"Aye, Phandelver's Pact...
"You see, more than 500 years ago, clans of dwarves and gnomes made an agreement known as the Phandelver’s Pact, by which they would share a rich mine in a wondrous cavern known as Wave Echo Cave. In addition to its mineral wealth, the mine is said to have contained great magical power. Spellcasters allied themselves with the dwarves and gnomes to channel and bind this energy they discovered into a forge they say was called 'the Forge of Spells'. It's said that magic items could be crafted in this forge, and times were good. Our town of Phandalin, being near the mine, prospered as well until disaster struck in the form of an army of orcs sweeping through the North, laying waste to all in their path.
"This force of orcs, reinforced by evil mercenary wizards, attacked Wave Echo Cave to seize its riches and magic treasures. Wizards fought alongside their dwarf and gnome allies to defend the Forge of Spells, and the ensuing spell battle destroyed much of the cavern. Few survived the cave-ins and tremors, and the location of Wave Echo Cave was lost to all for centuries.
"In that time rumors of buried riches have attracted treasure seekers and opportunists to the area around here, but no one has ever succeeded in locating the lost mine.
Then recently, Gundren and his brothers, Nardo and Thundren, came to town claiming to have discovered the entrance to Wave Echo Cave, and stated their intentions of reopening the mine. But now you say Gindren has gone missing, and I do not think it a coincidence."