Video: Each of the new Ghostbusters has received their own introductory video, meaning we've received a ton of new film footage, along with details about the characters and the plot. We know that Abby (Melissa McCarthy) and Erin (Kristen Wiig) used to be partners, with Abby still believing in their work but Erin leaving to teach at Columbia. Abby publishes their book without Erin's permission, Erin visits Abby, sees a ghost with her and ends up believing again. And, as in the original Ghostbusters, loses her place at Columbia in the process.
We also see Patty (Leslie Jones) join the team because of a ghost encounter of her own, and that her knowledge of New York and its history is important. The final piece is Holtzmann, who is clearly the engineer/inventor of the group. But other than her being weird, we still know nothing about her background or why she's on the team.