crudely mashes up story elements from the first and second of the rebooted game series; it's executed quite poorly, is uninteresting, and for the most part quite predictable.
there is a MASSIVE story inconsistency between it and ALL of the games (not just the rebooted series) which is presented as a plot twist; i won't spoil what it is exactly, but it's very unwelcome and the affect it has on Lara is profound and frustrating.
it's rather obvious the writer is not a fan of Tomb Raider, they just saw Queen Himiko's Island of Yamatai and Trinity and decided to make a film with them.
watch it if you feel you need to, otherwise avoid it - i regretted watching it.