Ellen (Adinia Wirasti), a successful lawyer, is a single mom who rarely spends time for her only child Kiara (Aurora Ribero), who eventually grows as a rebellious teenager who has more to vent her emotions on social media. They live with Agatha (Niniek L. Karim), Ellen's mother who is very fond of Kiara. When Agatha died of a heart attack, Kiara who since childhood very close to Omanya immediately shaken. To entertain Kiara, Ellen invites away on vacation so that they can both spend quality time to treat the times in which Ellen is too busy working. They finally went to Sumba, and Kiara went home with carefree heart. In Jakarta, Ellen immediately greeted a big problem in the office. The big project he's working with Iwan (Ernest Prakasa) is in danger of falling apart. Finally because busy, Ellen did not keep his promise to watch Kiara appear in audition talent search event on television that Kiara prepared for a long time. Kiara was angry and went to Sumba alone, where the last time he could feel a glimmer of happiness. Will Kiara be able to trust her mother again? Is Ellen able to knit back this little family? Watch the SILY SIGNAL, showing in theaters starting December 21st.