From publisher blurb: A TECHNO-INFESTED RESEARCH STATION Brutality and betrayal take center stage as the team is caught in the midst of a conflict between former allies. Friend and foe must be chosen while being pursued by a powerful enemy. The Long Winter is a 4 hour adventure for 1st through 4th level characters using the Esper Genesis Roleplaying Game. It is also part of the Crucible Corps organized play campaign. It can be played on it's own, as part of your 5E sci-fi campaign, or as the fifth installment of the Shadow of the Zephyr adventure series.