People tend to act more cooperatively immediately after engaging in synchronous activities together. The range of activities which fit this pattern is not yet theoretically well-understood, but mediated moral narratives may provide an interesting test case to aid in developing this understanding. To test whether synchronous experiences during simultaneous media use foster cooperation, an online experiment was conducted wherein participants engaged in either synchronous or asynchronous media use behavior, with varying narrative content (morally-charged vs. amoral narratives) to manipulate the media experience. Cooperation was measured using both self-reported feelings toward other group members and the outcome of a weak-link economic game. While the hypothesized effects did not reach statistical significance with the data from this experiment, effect directions were as expected. Subsequent exploratory analyses suggest theoretically interesting insights and useful directions for future research in this area.