Unfortunately, there’s no battery in it.” Inside the tunnel, there is a lock box that you can interact with. In order to unlock these quests, known collectively as The Mysterious Qi quest, head to the bus stop and enter the tunnel on the left. If you are interested in exploring this area, you will need to complete a series of quests in order to remove the bouncer from the doorway. In the back right corner of her shop, you will notice a character guarding what appears to be the entrance to the back room of the shop. When you unlock the Oasis in Stardew Valley, you will also gain access to Sandy‘s shop.