This is what the love-struck Thanasis wonders, while sorting his collection of stones. Poor thing, Sissy's heart is as hard as a rock and he will never possess that rock. However, he doesn't lose hope, he continues to eat his beloved fried potatoes with undiminished appetite, to play with his friend Haris, to get the good Apostolis into trouble, and to torment the neighborhood kiosk owner to exhaustion. Because Thanasis is a very difficult customer. In order to buy a bubble gum, he will ask as many questions as it takes to make the kiosk owner change professions. The tenth album of the "Rosa" series by Arka, where innocence goes hand in hand with devilry and emotion with vitriolic humor.