STORY:

What would happen if the most potent artefact like death's mask will end up in the wrong hands? Well, with this artefact, you can revive every human being. 
You can resurrect every human being on this planet, even the worst one. 
To kill death, you need four magic crystals of life. With those crystals, you can open the Tomb of Death in China. Lara can't let anyone rule the death.
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In her first part of the Journey, you will start in Greece.
Here you will find the first Crystal of Life. The second crystal is in Egypt, buried in Luxos. 
But sadly, she won't be able to obtain the crystal, because an unknown soldiers will attack Lara and they will abduck her. 
But that will be for the part 2.

I am telling you this, because there is no way to have the cutscene at the end to explain this :)