In a 2 hours 22 min movie you can see

1. SRK as a star.

2. SRK as a fan.

3. SRK as a fan imitating his star perfectly.

4. SRK as a fan imitating his star imperfectly.

5. SRK as a star imitating his fan.

All this with emotions like anger, happiness, hatred, love, attitude, helpless, and uncountable mood swings which is well reflected through change in expression and body language

He is definitely back with a bang!!