A funnel emerged in the night, pale blue pulses emanating from the rim and sinking into the centre. The funnel was aimed downwards at about 45 degrees, and floated several hunderd feet above the city. No-one below, however, seemed to notice it. Suddenly a jet of pure white light emerged from the funnel and began to descend. It split into four beams, and each one split again, crossing paths with other beams. As they split, the light gained colour - a multicoloured array, all falling towards the buildings below, swirling, each apparently on a course to hit something - or maybe someone - in particular. Suddenly they reached buildings and, as suddenly as they had emerged, they were gone. Nobody below noticed a thing, apart from one man, who had been waiting for the light to come.
"What do you mean you lost them, M?" John asked, speaking into a small headset attached to his right ear. The cold wind snatched at his coat, satchel, and hair, and he shuffled a couple of textbooks which were tucked under his left arm.
"After they came through, the energy disappeared from our equipment. Therefore you, as our agent in your world, need to locate them," came a calm, deep voice from the headset.
"Oh great. So it's my job to look for your 'guardian' people is it. Thanks."
"J, you know this is importan-"
"Did I say I wouldn't do it," snapped John, as he felt for the mobile phone in his pocket. He ended the call and slipped the phone back into his pocket. He stopped for a second, and then fished it out again, turned it off, and replaced it before walking on.
He arrived at the school, as he had planned, around 20 minutes before his first lesson - Maths - and so he walked through the relatively quiet hallway to his locker, where he dropped of the textbooks as well as his lunch from his bag, and replaced them with a couple of folders and textbooks for his first two lessons.
Within the locker was more than just books and food. Hidden at the back, amongst various pieces of rubbish, was a large black box beneath everything else, what appeared to be a small vanity mirror apparently put there by John's predecessor, an old, cheap mobile near the mirror, a disposable camera, various recordable CD's and a PDA, which John removed and took with him outside, where he sat on a low wall, giving him a full view of the main student entrance, and began to type.
((Edit: Start anywhere you want, but before school starts and preferably not too long after this post ends))