The game is a solitaire game about honoring the 22 Major Arcana offering the 56 cards of the Minor Arcana set. But you can't simply gift those Offerings randomly, each Arcana need to be honored with a very specific ritual.
The player keep a hand of 8 cards on the table, and 4 Major arcana, each one with one specific condition to be fulfilled (2 Kings, 3 of a kind, etc). The player can use the cards on the table to honor them, or discard them to send back one of the Major Arcana to the deck.
The game ends when all the 22 Major Arcana has been fulfilled or when there are no more Minor Arcana that can be offered.
The game has 2 game modes, a default one and another more complex that allow to get a Gift each time that an Offering is done to a Major Arcana.
—description from the designer