The Boss Baby was one of the top 20 highest grossing films of 2017, which earnt it a place on my ’50 Unseen’ list, thereby ensuring it would remain in my consciousness for as long as I referred to said list (i.e. for the rest of time). Then it went and got nominated for an Oscar too, displacing the likes of The LEGO Batman Movie and Ghibli heir Mary and the Witch’s Flower in the process. With those factors combined, I felt I had to witness it for myself. I chose to do so in 3D, to hopefully ameliorate at least some of the anticipated discomfort of watching the film itself. I needn’t have worried: despite what many people will tell you, I thought The Boss Baby was actually pretty good. Well, most of it.

It’s the story of Tim (voiced by Miles Bakshi and in narration by Tobey Maguire), a seven-year-old only child with a hyperactive imagination and two doting parents. But then a new baby arrives… As Tim’s parents’ affection shifts to their attention-demanding bundle of joy, he’s the only one who can see the truth: that the baby wears a suit, carries a briefcase, and is clearly a businessmanbaby on some kind of undercover mission. Obviously no one will listen to Tim, so he sets about exposing the truth.

For all its daft humour, the reason The Boss Baby is so successful (for an adult viewer) is that it’s actually a really neat way of tackling the whole “sibling displaced by new baby” thing, from the kid’s point of view. That’s the thematic and subtextual meat that makes it more than just “wouldn’t it be funny if a baby was a businessman!” As part of this, it has a nice line in juxtaposing how an imaginative seven-year-old sees the world versus how it really is — showing us both Tim’s fantasies and the actual events they’ve launched off from. It allows the film to have exciting and kooky stuff (like talking business-babies and elaborate action scenes) while also remaining grounded. Watching in 3D heightens this further, incidentally: as with most computer-animated films, the 3D effect is generally pretty nice, but it really comes alive during the fantasy and action sequences.

If that all sounds oddly serious, it isn’t. Arguably best known nowadays for his Trump impersonations, Alec Baldwin is an obvious choice to voice an infantile businessman. This one’s actually competent, though, so Baldwin plays it straight and thus is dryly witty. There are also plenty of amusing visual gags, one-liners, and so on to fulfil the expected comedy remit. Okay, some don’t land or are a bit juvenile, but it is a kids’ movie after all.

Unfortunately, what works in the early sections begins to go awry later on. By the third act it’s lost the connection to plausible reality that made Tim’s imagined versions such fun — it’s impossible to translate the OTT action we’re witnessing into what might be really happening. I know it sounds daft to talk about plausibility in a film about a baby who’s a businessman, but it’s the relationship between Tim’s fantasies (i.e. the business-baby stuff) and real-life (i.e. really he’s just a new baby) that makes the earlier parts work.

Arguably worst of all is the epilogue, which takes a very serious emotional issue (the loss of a baby) and tosses it aside to expedite the resolution the filmmakers want to reach. Maybe it’s a bit much to expect a kids’ movie to attempt to tackle the realities of losing a child, especially when it only introduces that element in its closing minutes, but then surely the solution is to not even go there; to find a better way to wrap up the story?

It’s this increasing lack of attentiveness that ultimately led me to give the film a 3 instead of a 4. If it had kept up the early quality through to the end, I likely would have looked more generously on it. Nonetheless, thanks to the bits that worked really well, I generally found the film to be a pleasant surprise.

Spin-off TV series The Boss Baby: Back in Business is available on Netflix from today.