Have you ever built a boat out of LEGO? It’s tricky, right?

There’s so many things to remember – what colour to make it, how big to make it, but the most important thing to ask yourself is… will it float?!

Well, hopefully that’s a question Johnny and Cassie will be asking themselves when they take part in the Will It Float? LEGO Life Challenge!

And now the pressure is on! Will Cassie make a boat that floats or will she be left with a submarine? And will Johnny’s heart sink if his boat gets sunk?

There’s only one way to find out who wins this challenge…

Watch the video now!