"El Grillo" trains with his best friend "Espinas" and other young boxers. The dynamic of the gym is altered when "El Grillo" brings his little newborn baby, alias "La Chapulina".

Miguel “Bayoneta” Galíndez is a retired boxer from Tijuana who finds himself living in a cramped flat in Finland. As his future begins to look up, a desire for redemption draws him back into the ring.