Seven childhood friends in an aerospace town vow to reunite after college entrance exams. Only Yingzi keeps the promise as "The Big Dipper" group drifts apart. Years on, their careers unfold... Read allSeven childhood friends in an aerospace town vow to reunite after college entrance exams. Only Yingzi keeps the promise as "The Big Dipper" group drifts apart. Years on, their careers unfold while an unanswered teenage romance lingers.Seven childhood friends in an aerospace town vow to reunite after college entrance exams. Only Yingzi keeps the promise as "The Big Dipper" group drifts apart. Years on, their careers unfold while an unanswered teenage romance lingers.