It's a family crisis when the team discover former Sepilok resident and regular visitor, Ann, is pregnant. This should be great news, but Ann's foster daughter, Mui Mui, is distraught; Trouble-some teenager Ceria is also back paying a visit but this time he's in trouble, he's the victim of a dog attack; And Sue braves the world's smelliest fruit to put the babies' observation and learning skills to the test.