A long series of events in Karen's classes. Kate will have to face a series of challenges like never before.
A series of events with Nicolas in his office, tête-à-tête. This one gets unlocked after a couple of events with Karen.
Optional events with Oscar. Turning him down won't have any consequences, but saying yes might lead to future events.
Another series of events with Karen, unlocks after a number of events with Nicolas.
And at the very end, an important event with Candy, who will finally get answers for many of her questions.
All events with Karen, Nicolas, and Oscar have periodic events at the end.
We tried to write down an informative quest log so no one gets lost. Every series of events (except Oscar's, but you definitely won't miss that one) shows you in percentages how much you've done so you know if you've completed the update.