Not at all! The plot-heavy stuff is purely optional in this context - for new players, all they have to do is be rescued by the current game characters at the end, which they presumably will be if they were at the party to begin with. Your character could stay brainwashed the whole time and have people bring them home at the end and it would be fine.

There is a log going on in-game and I wouldn't expect a new player to be able to latch onto it so immediately.