Complex sentence: A mix breed puppy meets Mikey and gathers his scent before Mollie takes him away, and then is picked up by a biker father and son, but he quickly escapes, sensing the danger and begins walking the streets alone.
Split into simpler sentences: A mix breed puppy meets Mikey and gathers his scent before Mollie takes him away. Then, he is picked up by a biker father and son, but he quickly escapes, sensing the danger and begins walking the streets alone.