Trama

Michael Jeffery Jordan, as a young 10-year-old boy, has a dream to become a famous sports player at the National Basketball Association. Many years later in 1993, Michael retires from his job at NBA and instead plays professional baseball, which he unfortunately is not as good at.

up in outer space, there exists a giant dark evil alien space theme amusement park planet called "The Planet Moron Mountain Theme Park". The dark evil alien owner, founder and president of the park, Mr Smackhammer, is tired of getting less customers. and decides that the park needs a new attraction. after thinking about it, he comes across a perfect gang of crazy cartoon character animals named the "Looney Toons" who live in a cartoon 2-Dimensional animated fictional universe known as the "Toon World" underground Planet Earth, he sends his short little mischievously evil Nerdluck Moron alien minions, Pound, Bang, Bupkus, Blanko and Nawt, on a mission to Earth to capture the Looney Toons. They arrive underground Earth in the cartoon universe where Bugs Bunny Esq., the Toons' leader and a clever large gray hare-like rabbit, is being chased through the deep toon forest by his archenemy and a hunter of the dark wild, Elmer J. Fudd, who nearly catches him, but is flattened by the Nerdlucks' spaceship when it lands. Bugs calls up all the Looney Toons for a big emergency meeting at the Toon-Town Schlesinger Union Hall, where the Nerdlucks announce their evil plan to take them as slaves for attractions in the theme park. Bugs convinces them that they need to give the Looney Toons a chance to defend themselves, and challenges them to a big sports battle of basketball since they are too small to jump high and the Nerdlucks accept, knowing very little of basketball but have a secret plan. they break into a basketball game in the NBA back in the real world and force their way inside their best players (Charles Barkley, Patrick Ewing, Shawn Bradley and Mugsy Bogues), and they steal all of their skills and strength. It is not long before the Nerdlucks absorb the abilities and strength of the NBA players and mutate into giant superstar-like monsters, known as the "Monstars".

Meanwhile in the real world, Michael meets a clumsy publicist named Stanley "Stan" Podolack. who wants to be his assistant helper in order to make him happier, to make his life easier and to make sure that no one bothers him. Michael, Stan and their actor friends, William "Bill" Murray and Lawrence "Larry" Bird go to play golf a day or two later. Bugs, secretly hiding underground, uses his electromagnet to suck Michael's golf ball into the golf hole after he has hit the ball. then uses a lasso to pull and suck Michael in. Bugs explains to him that aliens want to take them as prisoners and that he's their only hope, Michael is not sure at first because he has not had experience of basketball in years, though after being introduced to the Looney Toons, The Monstars and their union hall gym, he decides to join the team. Bugs also meets a female rabbit named "Lola Bunny" who is experienced with basketball as well, and he immediately develops a crush on her.

Michael soon realises that he needs his sports gear, so Bugs and his jealous frenemy, a large black foolish and selfish duck named Daffy Dumas Horacio Tiberius Armando Sheldon Duck go to his house in the night and grab his shoes and shorts, after narrowly surviving getting attacked by Michael's pet bulldog Charlie (named after Charlie Barkley) by being saved by Michael's children. Bugs tells them about the game but tells them to keep it secret. After practicing for the game, Stan digs underground looking for Michael and finds him underground in the cartoon world. Stan is hired to be a cheerleader.

The ultimate sports basketball battle begins that night at the Toon Stadium Arena. The Monstars win the first part, but Michael and the Looney Toons win the second part after drinking some magical powerful sports drink of Michael's that Bugs gives to them "The Secret Stuff (secretly just water)". Michael and Smackhammer then make a deal for Michael to go to Moron Mountain if they lose, and the Monstars win the fourth part and the Looney Toons have lots of injuries. Then Stan and Bill (who also makes it to the Toon world with the help of Ivan Reitman) start playing in the game and Michael scores the final goal, the Toons all win. Then the Monstars send Swackhammer off to the moon where he crashes after realising that they have more power than him, and then they shrink back to their normal size again and give their abilities and strength to Michael. the Nerdlucks try to be Looney in order to join the Looney Toons, but accidentally get shot and disintegrated to eyeballs. Michael returns home in time for a baseball game and Bugs falls in love with Lola as they share a kiss.

Michael resumes his career of basketball in 1995 and Bill retires. Michael gives the talent and strength back to the NBA using the Nedrlucks' basketball, and the film ends.