Tamizhuku En Ondrai Azhuthavum(2015)

Original title: தமிழுக்கு எண் ஒன்றை அழுத்தவும்

The city's mobile networks are down due to a solar flare, and Vasanth, an inventive youngster, tries to restore it. Mukil can save his lover only if he can get through to her over phone. Meanwhile, a terrorist will be able to activate the bomb he has planted in a taxi if Vasanth succeeds!