Juliette Fleming, the daughter of your mentor, Lord Fleming (whom you helped in the previous game), needs your help. She believes she can trust you to change her ailing fortunes - and if you end up a multi-millionaire in the process, who's complaining?
You have to ride the ups and downs of the stock market. The basic principle in making cash is simple: buy low, sell high. The only challenge you are faced with is knowing which way the stock price is moving - you need to jump on the train at the right time, and more importantly, you need to know when it's time to get off. That requires quick wits, nerves of steel and lightning-fast reactions. You can, of course, make things easier for yourself by foraging for extra information using your analyst or, more dangerously, your spy.
Of course, investing on the stock market implies more than passively riding the wave: you can change the course of history, you can change the stock price's behavior. There are a number of ways to do this. You can buy shares and take control of a company. You can use the spy to start rumors. You can influence stock price using the guru effect to create mass hysteria, as people start trusting your jugement over their own.