Lisa is reprimanded by her superior because of the promise she made to Mark.

Lisa asks a friend from her university days for help, but he is not enthusiastic about her idea to organize an expedition up to the Gran Paradiso.

Martin chooses three boys to go on the mountaineering expedition, and Rocky, at least, is immediately enthusiastic about the idea. However, Martin withholds one important detail from them at first...

Martin's boys get into a fight, which threatens to derail the whole expedition to climb Gran Paradiso. Will Lisa manage to calm everyone down?