Expectations Exceeded

As usual, great KDrama casting. The business lessons were abundant with a good sprinkling of humor and romance without getting silly. Really enjoyed the leads, the male friendships were endearing and believable, the sibling rivalry was possibly the only thing a bit over the top for me but all in all a good series. Current and interesting subject matter and good settings. Another favorite character is the head of Sandbox. The business challenges were believable and the progress of the team was utterly realistic, I think.

Who can help me understand the 72 hour ref in Ep. 1

The opening scene of Ep 1 shows the building crashing down and there is a subtitle about 72 Hours earlier... we then see Vincenzo in Italy... so...at the end of episode 4 I am confused about that... seems like more than 3 days have passed and the building is not yet imploded. What did I miss? And, when he was in hospital one of the arcade shop keepers talks about him having been asleep for 9 days... so I am confused. Really enjoying on the whole, even though I got a bit bored in Ep 3. Ep 4 was great fun with unexpected plot twist. Yay.