Frank har mistet sin yndlingsanorak, og efter at have pustetestet nyt lærredsstof kommer Singer-symaskinen på arbejde med at lave en ny anorak. Under den årlige rensning af pigstenene dukker en mærkelig rende frem, og Frank kan ikke gennemskue, hvad den har været brugt til.
Frank has lost his favorite anorak, and after breath-testing new canvas fabric, the Singer sewing machine goes to work making a new anorak. During the annual cleaning of the spiked stones, a strange trench appears and Frank can't figure out what it was used for.Archaeology and the anorak cart