Summering, in theaters Aug. 12, stars Lia Barnett, Sanai Victoria, Madalen Mills, Eden Grace Redfield, Lake Bell, Sarah Cooper, Ashley Madekwe and Megan Mullally The Spectacular Now director James Ponsoldt is back with his new coming-of-age film Summering — and PEOPLE has an exclusive first look at the touching trailer. In the movie, a group of four friends grapple with …