There’s a bunyip crying in Wombat's field. Yarralin is sad because he doesn't smile. He may be having treatment for a serious illness, he may be lonely, bullied or afraid. Because Yarralin is sad, everyone around him is sad too. He must go on an adventure to find a smile. Along the way, Yarralin realises he can CHOOSE to be happy. He just needs to look in the mirror and smile.