Even though Christmas is just fast approaching, Chaldea has been struck by a scorching heat wave! As the temperature climbs past 107°F, staff members collapse from the heat, and even the Servants have come down with a mysterious fever...
The sole Servant untouched by this odd affliction insists that the only one who can resolve the bizarre weather and illness is Master... With only half a day left until destruction, will Chaldea survive to see another Christmas?
A limited time Christmas event in Fate/Grand Order, released on the Japanese server on December 15, 2017 and on the NA server on December 16, 2019. Altera the Santa is given as a reward to players for completing the event.
