You may not discard any Option cards during this time
The plot of each scenario is determined by "act" and "agenda" cards: the act deck describes the objectives that the investigators are trying to accomplish, usually by collecting enough clues from the locations
Also, this makes the package superb value for money not only are you getting your hands on 100 nicely made, durable and reliable card sleeves, but you even get a deck box to store cards in too
In addition, most of the new Straks have this card's recruit, resurrection, and search effects, and can be freely put into play from the deck, from the hand, from his GY
While this section overlaps a bit with the discussion on Collector Boosters, dont sleep on the draft or set booster boxes these sets bring to the table