Story
You reached the Garden of the Illusion God, where Ardus Shrine is located. However, the area was swarming with spirits, which made it impossible to get close to the shrine. Speak with the pilgrims while investigating the garden and the shrine.
After completion (spoilers)
"However, with the garden in such chaos, the shrine has all the more reason not to let you pass." You reached the Garden of the Illusion God, where Ardus Shrine is located. However, the area was swarming with spirits, which made it impossible to get close to the shrine. You spoke with the pilgrims and learned that you needed to resolve the disturbance in the garden first to enter the shrine. You helped them seal the rifts and calm the spirits.