sarah copland: i just remember i was just screaming, "my baby. my baby. help my baby."jheir: everything is really destroyed. the fabric of our generation and our time is really destroyed. it's really gone. adam: as the abc's middle east correspondent, beirut was my city too. the blast wrecked my neighborhood, injured my friends and stole hope from those who had already endured so much. tonight, on "four corners," the extraordinary story of how this disaster unfolded, told by the people who were there. ♪♪♪ ♪♪♪ ♪♪♪ adam: lebanon may be broken and broke, chaotic and forever on the verge of collapse. but for the two years, i lived in beirut with my family. it was a wonderful place. seductive and special. and it seemed safe, just like the ever-present reminders of the civil war. here's a beirut scene, the holiday inn. the snowcapped mountains at sunset and the children feeding the fish on the pier. the district shattered by the blast was our world. one café became an oasis for my family. omar: it's an old building with-- adam: it was owned by lebanese-australian omar jheir,