Plot under wraps. The third film in the "28 Days Later" franchise.. Originally, the follow-up was set to be titled "28 Months Later", continuing with the movie's timeline-set title motif. However, after so much time had passed since we last returned to this world in 2007 (28 Weeks Later), it was deemed more appropriate to name the film “28 Years Later”.. Followed by 28 Years Later Part II: The Bone Temple