During the Tiddlytubbies' Sleepybyes, RuRu is wide awake. Tinky Winky, Dipsy, Laa-Laa and Po take it in turns to sing him a lullaby. When the Teletubbies sing the lullaby together, it sends RuRu off to sleep. In Tummy Tales, a baby is sung a lullaby by their mum
- This episode aired in the UK on 27th June 2017
- Tinky Winky was both the missing teletubby and the boo shouter but Po said goodbye for a final time.