DETROIT — Little Caesars Arena in Detroit, Michigan was packed with people for Michelle Obama’s book tour Tuesday night.

Although, before she hit the big stage, the former first lady made a visit to the famous Motown Museum, where a group of college students were surprised when she walked through the door.

The group of teenagers, ages 18 and younger, all attend Wayne State University. They were at a forum to discuss various topics such as education, culture issues, goals and overcoming obstacles.

The event moderator was actor, comedian and Detroit-native Keegan-Michael Key. Also in attendance for the talk was Craig Robinson, vice president of Player Development & G League for the New York Knicks.

Robinson also happens to be Obama’s brother. 

Obama walked in for the big moment, while the gentlemen’s conversation was in full swing. 

Take a look at the above video to see their reactions.