reporter: that s 9-year-old joshua joseph talking to dispatchers about his 6-year-old sister joanne. their father just left for work. his grandmother was baby-sitting them. when joanne suddenly collapsed. their grandmother doesn t speak english and was unable to call for help. so, joshua ran to the phone and called his father. she had a seizure. i m not home. call 911. reporter: joshua then called 911. okay, do you see her chest moving when she s breathing? yeah, i see her chest moving but every time i call her name, she s not really responding. reporter: joshua stayed on the phone with the dispatcher until emts arrived to their home just south of boston. is your front door unlocked? yeah, it s locked. it s locked. do you want to unlock the front door for me? okay, i m going to unlock the door right now. reporter: paramedics then rushed joanne to the hospital. joshua still concerned about his sister, called the hospital
29th, the day that sandy made landfall. lucy became a beacon of hope after surviving the storm undamaged. rebuilding is taking place very slowly in some of the areas hardest hit by sandy. amy robach visited breezy point where hundreds of homes went up in flames. reporter: before the storm hit, mary from breezy point was getting ready to hunker down. sticking it out. reporter: like many, she was preparing for a big storm. are you going to come see puddles with us? reporter: at first, rain and flooding. 6:55 and the power just went out. we are officially screwed. reporter: then mary s sister joanne spotted a bright light in the distance. the unimaginable. oh, my god. reporter: a massive fire began to spread. i m really anxious. reporter: firefighters braved waters knee deep, saving every single life in the town. in the end, 135 homes burned to the ground. another 220 destroyed. we don t know where they are going to take us. we don t know don t know.