Greta is thirteen. She loves her racing bike - and flies away on it as soon as someone starts talking about feelings. For example, her classmate Lucia, who seems to only think about it, or Emma, an expert in matters of the heart. Greta doesn't believe in love... until she meets Anselmo. This guy is as beautiful as an angel and as mysterious as the envelopes he hands over while rushing around Rome on his bicycle. Trying to find out his secret, Greta, Lucia and Emma find themselves in a strange place where miracles happen...