Unusually for a geek, "Hiro" is also quite a switched on, charismatic, character who goes to a science fair with his big brother "Tadashi" armed with a game-changing "micro bot". You just have to think what you want it to do and it can replicate itself, make shapes, move - the applications are endless. Milionaire "Krei" offers to buy it there and then but another scientist "Callaghan" (reminded me of Sir Ben Kingsley) tells the lad that he is just after it for the money. Anyway, "Hiro" decides not to sell and tragedy very prompt ensues. That leaves him alone with only his brother's recently developed nursemaid robot "Beymax" (imagine the love child of Bibendum and the Snowman). "Beymax" is quite a sophisticated fellow and can tell our hero is unhappy - but nowhere near as unhappy as he is going to be when his "micro bot' chip flies off to join loads of others. Where have they all come from and who is behind this? His friends are also concerned about him, and they are no slouches either so they ally with their pal, his newly enhanced "Iron-Man" style android and battle with their masked foe is joined. I enjoyed this. There are loads of characterisations, plenty of action and the animations are original. There's room for some humour in the writing that also delivers an underlying premiss of understanding and of loyalty to your friends and although the story does become a little contrived at the end, this is a fun story that avoids the standard repetitive combat scenarios and has, across the board, an engaging human element to it.