The story of how the Commissioner's daughter became Batgirl and how her best friend becomes Poision Ivy is told.

Continuing where we left off in the first part, Barbara Gordon becomes Batgirl in order to save the commissioner, but does Batman really want a sidekick?

High-ranking Gotham officials begin to embrace environmental causes after the delivery of mysterious plants, and it becomes clear they're under the influence of ... Poison Ivy.