Episode Title:Gargle, Gargle, Toil and Trouble.Episode Description:While the Duel Masters go to Tierra Fuego to interview a possible successor to Master Nigel Brightmore, Ray investigates strange occurrences at the Carnahan Chemical plant where Alex is distributing the Choten's Evolution Serum. Meanwhile, Gargle visits Gabe’s house for the first time and has to deal with Donald and Ronald. At the same time, Allie's mother Piper returns into Allie's life.