The Golden Chalice is an important religious relic belonging to the Church of the Sun Lord. The Princess joins Christano and Myra on a quest to explore the Temple of Hyath in search of the chalice. According to Christano, the chalice was stolen from the church by thief. The thief was eventually found, but he had already sold the chalice and the buyer could not be located.
Christano shows an unprecedented obsession for the chalice, but it's unclear if there are reasons beyond being a prized relic.