A Time to Harvest is a Call of Cthulhu campaign set in 1930 and intended for a group of four to six student investigators who attend Miskatonic University in Arkham. What starts as a university field trip to Vermont leads the intrepid investigators into a dark web of terror and intrigue. Otherworldly plans have been set in motion, which if brought to fruition, spell doom for humanity.
From the "Introduction" section:
This book is the first of six monthly installments in the A Time to Harvest Organized Play campaign.... The campaign itself is made up of six episodes... Each episode presents a different but linked scenario.
First installment of organized-play campaign, released 15 April 2016.