Remember When? / The Mimiloo Mystery Friend. Remember When? After a mishap with Tack's invention, Mim-Mim loses his Mimiloo memories! So Kate leads him to all their favourite sights in Mimiloo, in search of an extra special memory that will jog the rest back into place. / The Mimiloo Mystery Friend Detectives Kate and Mim-Mim lead the gang in search of the mystery friend who's leaving presents for everyone in Mimiloo! Their fun investigation leads to a surprising twist - and a very pleasant surprise.