Alfonso is a retiree who visits Nanda, an elderly woman who was like his mother when he was orphaned, at a residence where Luisa, a young social worker, works. One morning, collecting snails in the Prado de las Estrellas, Alfonso meets a young man who emerges from the mist on his bike. Thereafter a friendship is born between the old master and the promising young cyclist. Alfonso, supported by his friends, without equipment or sponsors, will make a great champion from Martin, and most importantly, a great guy.