Susie really enjoyed looking up at the night sky. One day she decided to build a big swing to fly all the way to the stars. She brought a string and a board and attached the swing to her favourite tree. As she sat down and began to swing higher and higher, she suddenly felt her feet detach from the ground! One moment Susie was already swinging high above the house, then above the clouds, and finally she found herself.... on blue soft grass on an unknown planet! Surprised, she looked around and saw a small, smiling alien in a green jumpsuit. - 'Hi, I'm Felo! - the newcomer greeted her. Susie waved at him and asked: - How did I get here? Felo shrugged his shoulders and pointed to a huge glowing stone lying behind them. - This stone says something! Sometimes it hums and sometimes it sings. No one yet knows why! Susie and Felo slowly began to approach the mysterious stone. Suddenly, the stone flashed and there was a soft, resonant whisper...