One Christmas Eve, Sarah Topps was working at her family's owned Christmas tree lot, Topps Christmas Tree Grotto, in Muskego, Wisconsin when Dr. Tannenbaum arrived and took her hostage. After Tannenbaum sent a taunting message to the Great Lakes Avengers, the team soon arrived and had to fight off the villain's animated Christmas foliage. Mr. Immortal discovered the way to defeat the walking Christmas trees and the team defeated Tannenbaum in short order. Sarah gave Mr. I a kiss on the cheek and Mr. I told her maybe they can get together another time.