Jeffrey & Friends discover A Troll in Central Park is a upcoming crossover to be made by tigerman531.
Jeffrey and his team travel to New York to visit Mitsuki's nephew and niece Gus and Rosie. Together, they go to Central Park to have some fun. But they soon meet a very friendly, flower loving troll named Stanley. He shows the time of their lives. But their fun time is soon interrupted by the evil queen of trolls Gnorga who seeks to turn Stanley into stone! She has also teamed up with two of Jeffrey's old enemies, Professor Ratigan and Tai Lung! Can Jeffrey and the others protect Stanley from Ratigan, Tai Lung and the Queen of Mean?