Grace is back to her zany antics again! Grace and Mimi have a secret:
Mimi is going to be a big sister. To get ready, the girls try being
"mother's helpers" to a family down the street, and Mimi begins to doubt
her big sister abilities when 4-year-old Lily seems to like Grace best.
But when Lily turns into a Terrible Tutu, Grace can't escape her! Can
Grace use her empathy powers to shows Lily and Mimi the creative path
towards a new friendship?