In the four-part show, archival footage and personal videos and photos are intertwined with present-day interviews and scenes of the group embarking on their 2022 tour
He has been admitted to the Labaid Hospital in Dhaka around 12pm on Thursday after falling ill, said Shamim Ahmed Rony, a film director known to be close to Shakib.
He told bdnews24.com that Khan had been suffering from stomach problems, for which he has to travel to Singapore twice a year for treatment.
"May be it's the same problem. The mental pressure over the last few days may be a reason."
Rony said further details will be available when the doctors finish diagnosis.
Apu, who had been out of the limelight for about a year, gave a live interview on Dhaka-based broadcaster News24 on Monday, where she claimed to have married Khan in 2008 and had a child with him last year.