Blue

U is upside-down, next to an upside-down tree, and the whole of Alphaland is blue. How did that happen?

This episode introduces the long U sounds, the digraphs '-ew-', '-ue-' and '-u-e-' and the words new, grew, blew, flew, true, blue, glue, rescue, tune, lute, flute, prune and mule.