one day in smart valley, Zolt was thinking about Darby. and how he misses him so much. so using Zolt's trusty belly button he was able to communicate with Darby.

Meanwhile over at water valley (where Darby lives) Darby was also thinking about Zolt. that is when his belly button glows.

and Darby Saw Zolt. and the two boys talked to each other as they talked about there favourite Teletubbies episodes.

and when Darby comes back the two boys will hump each other