Usually in a lego game, there is only six levels/missions per movie/series in the game but this game will have 13 in each series. The hub in this game is the tardis and you need to use the tardis to enter each level. On the Tardis console there are six sections. Five of them will be chained up (only in the hub, in levels it is not). The section not chained up is how to get to series one. Once you complete a series levels, a new section of the console will be unchained. You may be wondering what the fifth and sixth section of the console are for seeing as there are only 4 series in this game. The 5th section is to get to the special episodes after series 4 (planet of the dead, Waters of Mars and The End of Time part 1 and 2). The sixth section is bonus levels such as gameplay as enemies and