The Trio lands at Celestic Town, a town from the past. However, Team Galactic's Cyrus stands in the way of it's ruins!
Futhermore this event will change Dia and Pearl's relationship...!
What are the "Beings depicted in the Cave" that's targeted by the enemy? As the mysteries and battles of the sinnoh arc speed up, you won't be able to put this exciting development's down...!