Yoshi's Adventure

Yoshi lives with his owners Pepsi47 and Luigi. He passes his time by tormenting the brothers and outwitting his vicious neighbor, Turtle John. Aside from the brothers, Yoshi maintains an unlikely friendship with a dog named Poochy by constantly saving him from his abusive owner until the no kill shelter takes Poochy in to wait for new friendly owners after Yoshi called the cops on the abusive owner after he had enough of the owner's abusive antics of harming Poochy, and also socializes with Birdo and Koopa.
Pepsi47 has begun habitually bringing Yoshi to the veterinarian, in order to see vet Dr. Peach, whom he is in love with. He tries to ask her out, but due to a misunderstanding, Pepsi47 is given custody of a young koopa named Bowser Jr., who is sociable, friendly and hyperactive. However, Yoshi takes an instant dislike to him and competes for Pepsi47's attention, even though Luigi still likes Yoshi. Bowser Jr. is brought to a talent show, where Peach is a judge. Yoshi gets chased by dogs, which prompts Bowser Jr. to the center of the ring. A local television host named Fawful, who is also a judge, is impressed with Bowser Jr.'s performance, and offers Pepsi47 a television deal for Bowser Jr., but he declines.
When Yoshi returns home, fed up with Bowser Jr.'s presence in his life, he hits a ball against a lamp, and inadvertently causes a chain reaction that leaves the house in disarray. When the brothers discovers this, and despite Luigi's protest, Pepsi47 forces Yoshi to be leashed up for the night. When Bowser Jr. comes out to comfort the leashed up Yoshi, he tricks him into unleashing him so that way he'll treat him to some cookies, but since Bowser Jr. fell for it, Yoshi quickly runs inside and locks him out. Koopa and Birdo witness this as Bowser Jr. runs away but is then picked up by an elderly woman. The brothers and Peach search for Bowser Jr. while Yoshi's friends express their disappointment with him regarding his disrespectful treatment of Bowser Jr.
Meanwhile, revealed to be allergic to eggs, Fawful is envious of his news reporter brother and dreams to perform. He and his assistant find a notice the elder created of Bowser Jr. and, recognizing the lucrative possibilities, claim him as Fawful's own. When Yoshi sees Bowser Jr. on television and hears Fawful announce he and Bowser Jr. are going to New York City, Yoshi sets out to rescue Bowser Jr.. The Pepsi47 Bros discovers Yoshi is also missing, so Pepsi47 asks Peach to help search for him and Bowser Jr.. Yoshi gets into the broadcast tower via the air vents and finds Bowser Jr. locked in a cage, but Fawful enters and secures a shock collar to Bowser Jr., which, when activated, releases an electric shock that forces Bowser Jr. to perform tricks.
Fawful heads for the train station with Yoshi in hot pursuit. However, an animal control officer intercepts him, mistaking him as a stray. Meanwhile, the elder tells the Pepsi47 Bros. that Fawful took Bowser Jr., making him believe Yoshi was taken by him as well and then learns that Fawful is leaving for the train station. Concurrently, Fawful's abandoned chicken named Clucky, along with the other animals Yoshi finally understands that his friends were right cause he was jealous of him and realizes how Pepsi47 truly cares for Bowser Jr., as Luigi reminds Yoshi that Pepsi47 will still love him. So he tells Clucky that he is rescuing Bowser Jr. from Fawful. They release Yoshi from the pound as Fawful boards a New York-bound train, with Bowser Jr. in the luggage car. After arriving just to see the train depart, Yoshi sneaks into the train system control room and switches the tracks, leading to an impending multiple train collision. He hits an emergency stop button which halts all the trains just in time, then returns Fawful's train to the station. He frees Bowser Jr. and they prepare to leave. However, Fawful chases them and eventually corners the duo in a luggage area. He threatens Bowser Jr. with the shock collar that he sets up to advance level to give him a nasty painful shock, but Yoshi's friends from the pound, Poochy and the dogs, led by Clucky, attack Fawful and place the collar on his neck.
Shortly after, Yoshi and Bowser Jr. incapacitate Fawful by activating the collar. The Pepsi47 Bros. and Peach arrive and find Fawful, whom Pepsi47 pie faced him with pizza for kidnapping his pets. They reunite and return home, while Fawful is arrested for his supposed involvement with the trains, as well as kidnapping Bowser Jr.. Back home, Yoshi regains his friends' respect as they hail him a hero while Peach and Pepsi47 form a relationship.