Conversation so far:
who is singing in i can only imagine movie
the best-selling Christian single of all time. The film stars J. Michael Finley as Bart Millard, the lead singer who wrote the song about his relationship with his father
did the song in I Can Only Imagine become popular
Entering the Top 40 in the early 2000’s the song reached millions worldwide, who felt encouraged by its message of hope.

Question: What is the movie about
Self-contained rewrite: What is the movie I Can Only Imagine about