It isn't easy to prepare a report on a Quatrocento painter when you have no reference material! Luckily, Mot knows a guy named Leonardo, an obscure Florentine dauber of the sixteenth century. Not knowing that they are followed by Diane, the two friends arrive in the artist's studio to find him busy with his model, Mona. Unfortunately, Diane remains stuck in the Renaissance, while in their living room the parents become acquainted with Mona's violent temper. Of course, the situation is not really serious, as the time path for bringing Diane back couldn't be simpler: all you need to do is go through (among other things) a viking birthday and the coronation of Elisabeth II. To get back, just take a left after Noah's ark ...