Ep 7. 'M', 'N', & 'I'

'm' and 'n' are trying to settle whether they are related or just look similar when invisible 'i' spooks them both. 'n' changes into a ninja and 'm' into a magnifying glass, trying to find out who is playing tricks on them. But 'i' has to own up to her jokes when she needs help remembering her shape to change back.