Headquarters assigns Shelter 17 a new member, a Spanish-accented Chihuahua named Antonio (Carlos Alazraqui), who has been kicked out of many shelters for getting romantically involved with the female agents that causes the agents and Antonio to forget about placing puppies with their perfect persons and unfortunately for Lucky and his team, their his last hope if he is to remain a Pound Puppy or Antonio will be kicked out; but things get complicated when Antonio charms Cookie and Strudel that causes them to fight and forget about their latest adoptee, Pupster.