Grover is a man of small routines, not big responsibilities. When his sister asks him to babysit her two kids, Alex and Jennifer, he reluctantly agrees. It's just for one night after all. But nothing could have prepared him for what comes next.

In the wake of sudden tragedy, Grover finds himself unexpectedly thrust into the role of guardian. Convinced the children would be better off with their grandmother, he decides to take them on a cross-country road trip to ease them into the idea of their new life.

The roadside attractions aren't the only big things they encounter on their journey. The trio meet larger-than-life new friends and find themselves embroiled in a media storm as their simple road trip quickly becomes something much bigger. Along the way Grover, Alex and Jennifer begin to confront their grief and fears, and they form an unconventional, yet powerful bond. As past wounds resurface, Grover must face the ghosts he's long avoided and decide what kind of future he wants - and what kind of future he deserves.

Full of humour, pop culture and heart, BIG THINGS is a story of second chances and family, set against the stunning backdrop of Australia.