The 27-year-old singer-turned-actress - who is currently starring in 'Fifty Shades Freed' - is to appear alongside Ryan Reynolds, Bill Nighy and Chris Geere in the first live-action Pokemon franchise movie, according to The Hollywood Reporter. 'Detective Pikachu' is set to follow Smith's teenage character Tim Goodman, who has to team up with the mouse-like Pikachu in order to find his father, who has been kidnapped.