From the website:
If you have an insatiable thirst for plunder, Clank! Expeditions: Gold and Silk is for you: a series of boards to continue your deck-building adventures.
This first expedition begins in a mine abandoned by the Ruin Dwarven Mining Company (Ruin DMC) when it became infested with monsters. But it still holds plenty of fold for those daring enough to enter.
Still more wealth awaits in the Spider Queen’s Lair. Surely the Spider Queen herself is just a legend meant to scare people away from such a fancy castle...