Whistleblower Brent is desperate for help with his aggressive pit bull, Titan, who is destroying his relationship with girlfriend, Aileen, who saved Titan from the side of the road. Cesar is concerned that the couple are not compatible owners for the dog. He works with Titan and learns he is capable of socializing with other dogs but is anxious and excited, feeding off of his owners' energy. With so much tension under one roof, is there enough room left to heal all of the problems?Next, Cesar meets whistleblower Debbie and a group of dog owners who are deeply concerned about their good friend Marilyn's aggressive Italian mastiff mix, Cupid. Cupid began attacking other dogs at the park after Marilyn recovered from a fight against cancer. If Cupid gets in one more fight, he will be banned from the dog park, a devastating blow to Marilyn, who finds it to be a place of friendship and healing. Cesar is amazed by all the love and compassion, and is ready to help Marilyn and Cupid get their park on!