Judy Hopps goes missing for nearly a month, and only Nick can find her. When she is found, she has no memory of the last month. To catch the perpetrator(s), Judy must first regain her memories, no matter how terrible they may be.
When foxes start disappearing in Zootopia, Nick discovers that the sins of his father are a burden he can't carry alone, as he struggles to protect Judy and her daughter from the worst threat he's ever encountered: himself.