Amy Unbounded is set in the fictional fantasy kingdom of Goredd and features shape-shifting dragons that are capable of assuming human form. The story follows Amy, a nine-year-old girl that Hartman has compared to "Anne of Green Gables and Harriet the Spy" in terms of personality. The series has had two spinoffs, a prose novel entitled Seraphina and the webcomic Return of the Mad Bun. Hartman has stated that she chose to incorporate the dragons shape changing into humans because she found dragons harder to illustrate. Hartman chose to self-publish after facing rejection from traditional publishers, eventually publishing issues 7-12 of the series in a collected volume with funds received from a Xeric Grant.