Yeah, they've taken the plot from Rise of the Tomb Raider and run with it. The whole dead father leaving Lara a message about a mysterious relic and Trinity hunting for it in parallel with Lara stuff is ripped right out of the game. It was pretty generic/lacked any real motivation, which I guess makes it a good fit for the popcorn adventure they're aiming for. I think the plane bit was from TRTR2013? It's neat that there's a large amount of fan service going on, and by fan service I don't mean Lara's outfit.