Earth to Echo /Alex Nichols/

After a construction project begins in their neighborhood, best friends Tuck, Elena, Alex, and Munch begin receiving strange, encoded messages on their cell phones. They immediately inform their parents and the authorities, but when no one takes them seriously, the youths decide to crack the code themselves and trace the messages to their source. The youths' curiosity leads them to a robotic extraterrestrial who desperately needs their help.

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only have the right to Elena