After returning from his previous adventure, young Howard Lovecraft must lead an expedition including his father, Winfield, Uncle Randolph, and Miskatonic Universitys Dr. Henry Armitage to Antarctica, to prevent the awakening of Cthulhu!

A fourth-grader, Aoyama-kun, investigates the mysterious reason behind the sudden appearance of penguins in his village, which is somehow related to a power from a young woman working at a dental clinic.