The CGI is a little spotty and the writing is full of cannonball-shaped holes (Nathan is a good character but the backstories to Sully, the treasure, and the rival hunters are only hinted at; meanwhile, the twisty trust/betrayal dynamic of the main three awkwardly flip flops between serious and playful), but the clue-hopping pace is perfect, the comedy sufficient, and the adventure action barrels of fun (see the heist, the plane jump, and the ridiculously amazing pirate ship battle in the sky).
5