He tries to be invisible. He is closed and silent. But sometimes he wants to be heard and understood. And then he becomes unbearable. High school student Benji, nicknamed Puppy, unable to bear living with his alcoholic mother and vile stepfather, runs away to his father. But even here we encounter difficulties. The most important thing is missing: trust. Relations with the kids at school are also quite tense. Benji, who bared his teeth at the whole world, hid in his gloomy hole, like a wild animal. He tries to be as invisible as possible, not trusting anyone and finding salvation only in the pages of his diary. When the demons of hidden truth devour him from the inside, the daring Puppy has no choice but to weaken his defenses and let something new, unknown, sincere into his heart...