SINGAPORE — Making a prequel to a successful film is considered one of the hardest things to do. Double that (plus five) when you’re talking about Monsters Inc, which, in this reviewer’s book, stands as one of the most enjoyable and ingenious animated movies of all time.

It was a monstrous (pun fully intended) hit back in 2001 for Pixar, which raised the animation bar so high with the likes of Toy Story, Finding Nemo and The Incredibles.

So where does the new generation of Pixar film-makers start?

Right at the very beginning. Stepping up to the plate to direct is Cars and Toy Story 3 storyboard artist Dan Scanlon, a brave soul who’s up for tackling the legacy of Sully and Wazowski.

Scanlon knows exactly what the necessary core elements are for a Pixar hit: Hilarious running gags, memorable characters, heartfelt story. And he mostly delivers.

Monsters University works as both a frat house comedy and a coming-of-age tale, recalling all the recognisable Revenge Of The Nerds movie tropes. Our two lovable but obviously flawed heroes aren’t exactly mates when they first meet in university, but they must rally together a team of misfits to win a big competition and keep their dreams alive.

But for all of the plot’s familiarity (it is a prequel after all), extra props must be given to the screenwriters for throwing in some surprising detours on the two “scare-rs”’ journey to Monsters Inc.

Billy Crystal and John Goodman are, of course, more than excellent as they reprise their roles of Mike Wazowski and James P Sullivan, respectively. They continue to do no wrong with their comedic rapport. Helen Mirren as Dean Hardscrabble, the cold-as-ice headmistress of Monsters University is also spot-on, along with a host of A-list voices like Steve Buscemi and Alfred Molina.

It’s a fun outing at the movies, no doubt about it. Yet, there seems to be a little something missing. Perhaps the absence of any human characters for the monsters to play off against (like the awww-so-cute Boo in Monsters Inc) means it lacks the emotional payoff that the first movie had.

That said, Monsters University is still sweet, entertaining and satisfying as far as hard-to-get-right prequels go. It respectfully continues Pixar’s tradition of delivering films that focus on character, mirth and merriment. But like a younger brother, it will always have to stay under the mighty shadow of the superior, timeless classic that was the original.